I ran a hughes 11" 3000 stall in my '67 440 Dart, 245@.050" cam. Ran great, and you can get hughes through summit for a reasonable price, even better with a 10% discount code.

When I put a bigger cam in the Dart, I needed more stall and bought a used Edge Racing converter from Ebay, they are out of Florida. That converter works great, stalls about 3700.

For my satellite I've purchased a Dynamic, it was on sale and they are apparently experts at this version (around 4200 stall, same one that 383Man has I think).

And though a lot of people poo poo it, we bought a GER converter for my dad's 440 65 Coronet. At the time we didn't know where else to get a 19 spline converter. Anyways, that one has worked great.