Cab and Viper, I guessed at the head numbers. The heads are 516's.


And very good news. I measured the tubes on those headers. They're definitely 1 7/8" So that's got me smiling. I'm going to see if I can get those heads measured for volume. I'll get back to you guys with the results and see what you recommend for a piston.

What do you guys think about a Thermo-Quad for this combo? I have a rebuilt one ready to use.

Lindy