Well, right now the engine in the car is a .040 over 68 400 block with my original 670 heads, performer intake, 780 Holley, headers, RA IV (041) cam, M20, 3.90 Safe T Track. The best 1/4 mile time is a 13.60 @104 mph. I have another engine sitting on the engine stand that is going in real soon. It's a 71 400 block, Stroked Eagle forged crank, Forged H-beam rods, 68 #96 RAII heads, RAiv intake(9796611), Comp Cam (don't have the specs tight in front of me), Flame Thrower billet electronic distributor. It has 461 cubes. I guess I'll be running headers since I can't find any long branch round port manifolds. I am seriously considering going to a taller gear, like 3.55's, and an M21 instead of the M20. So I guess mine will be a RAII clone also, even though they didn't make one in 67.