my coil and thousand upon thousands of others are mounted on the engine.    I'm pretty sure the factory placed them there.  My point is i'd say they are built to with stand the heat. My coil is mounted right next to the waterpump clamped the the front of the block.  I would think unless they are mounted right against the exhaust, anywhere in the engine compartment is fine

Like GregB is where the factory put them.  Later engines had them laying down atop the intake, but the coil itself did not touch the intake - just the clamp.  I think the intent was the radiator fan would keep them cooled off with constant (not electrically cycled) air flow.  I have a huge Mallory coil mounted on the firewall directly behind the carb.  That way it disappears under the COBRA air cleaner.  Only problem with that location is it screws up the radio if I try to use the dash speakers.

Engine mounting works fine. If it aint broke, don't fix it...
Howard

Surely your car has SOME OTHER FLAW they could find to pick at?  It must be really nice if a coil location that was installed at the factory is all they can find! 

Only time I have seen a coil overheat was on Jerry's fastback when we drove through Memphis.  The problem was the coil was buried under some other components and it was not getting any airflow over it.  We relocated the coil and he had no more problems on the rest of the trip.

I have the duraspark ignition on my '66. I mounted the coil and module box in front of the radiator. The box is mounted on the driver side of the rad frame and the coil is mounted to the hood lock mounting frame in the middle and the coil wire goes up and over the top of the rad and straight over to the dist. I have not noticed any effect on how the engine runs with the longer coil wire I used. I also spray painted the coil and the box flat black so they would not show much through the grill.

Thanks for the input guys. I know I'll be keeping my coil on stock location and slap the next guy who make comments about it when they open my hood