I bought a Bosch 3G alternator for a 1995 Mustang with a 5 liter from Rock Auto in 2017. The part number at the time was AL7534N. It's still working good. You might want to think about fuses to protect the wiring. There are several illustrations on the internet to copy for the conversion, if necessary. 

Thanks for the replies. The AL7534N looks good and is a replica of my current alternator but with a bigger output. That would fit the bill.

As previously suggested, if you’re going to a high amp output alternator, be sure to fuse it correctly.  Without proper protection, if there is a short, these alternators can help make quite a fire.

Some powermaster alternators do not provide good output at idle.   Notice I said some as I am sure some will take exception to this. This depends on the engine speed and pulley ratios, of course, and not all of them appear to have this problem.  I do a lot of support on the Holley EFI forums and I have seen enough low output at idle issues and noisy power to recommend staying away from the 1-wire alternatives.  Just my experience.  The Ford 3G alternator in the 90 or 130 amp ranges provides consistent clean power down to idle and works well with EFI as well as high current loads like fans or pumps.  A real benefit of the 3G over the one-wire alternatives is that they are available nationwide at parts stores where an aftermarket unit may be days away.  The last two installs I did use a Delco branded 3G from Summit and in my truck I am still running a pick and pull take-off after 10 years.

=13pxhttps://www.summitracing.com/parts/ADO-335-1113

GPatrick wrote:

Some powermaster alternators do not provide good output at idle.   Notice I said some as I am sure some will take exception to this. This depends on the engine speed and pulley ratios, of course, and not all of them appear to have this problem.  I do a lot of support on the Holley EFI forums and I have seen enough low output at idle issues and noisy power to recommend staying away from the 1-wire alternatives.  Just my experience.  The Ford 3G alternator in the 90 or 130 amp ranges provides consistent clean power down to idle and works well with EFI as well as high current loads like fans or pumps.  A real benefit of the 3G over the one-wire alternatives is that they are available nationwide at parts stores where an aftermarket unit may be days away.  The last two installs I did use a Delco branded 3G from Summit and in my truck I am still running a pick and pull take-off after 10 years.

This is an interesting distinction. I do not have fuel injection and can't really hear my radio, so I wasn't concerned with clean power, nor can I comment on that application. I have used Powermaster in various high load applications for over 20 years and am satisfied with the quality and support. I use an AGM battery which likes a higher charging voltage and I have dual electric fans which pull a lot of amperage, so I called Powermaster and the tech advised that the alternator would put out 130 amps at idle and about 15. something volts. I can't find the test tag that came with the alternator, so I don't have a clear recollection of the output voltage. I am not pushing Powermaster, it just fits my needs at this time.

=13pxhttps://www.summitracing.com/parts/ADO-335-1113

I'm running whatever came with my CVF setup.

gkm24, Powermaster should be able to supply voltage/amperage figures at any given rpm. I would figure out your alternator pulley ratio, take into account your idle, cruising and power rpms, and ask Powermaster to install a pulley that meets your needs. I don't know if Powermaster will install or provide such a pulley, but it might be worth asking. Good luck.

BobE wrote:

boss347convertible wrote:

gkm24, Powermaster should be able to supply voltage/amperage figures at any given rpm. I would figure out your alternator pulley ratio, take into account your idle, cruising and power rpms, and ask Powermaster to install a pulley that meets your needs. I don't know if Powermaster will install or provide such a pulley, but it might be worth asking. Good luck.

In addition, provide Powemaster your idle RPM.  Typically, the alternator's RPM is 2 to 3 times engine RPM.  And the alternator needs about 2000 RPM to provide power.