Fluidampr Model 620200 for 351W, 289, early 302 engines that require 28 oz imbalance. These sell for about $270 new. I’m asking $140 including shipping to addresses in the lower 48.

I also have the March 1539 pulley (it’s a 3-sheave pulley) that you can use with this damper to make sure your stock accessory drives line up with the crankshaft pulley. I paid $106 for it new and am asking $55 (including shipping) for it if you buy it separately.

If you want both the balancer and the pulley, I’ll sell them together for $160 shipped to your lower 48 address.

Please respond to my email (rextherocket@yahoo.com) if you're interested or if you'd like to make an offer.