Boy you're asking alot of my memory.lol If anyone is seriously considering these, i can pop a valve cover and measure. if i remember right, the 350 is correct, but the exhaust rocker is stock. so you end up with a bastard combination of hardened shafts, offset intake, stock exhaust, and then custom spaced hold downs to keep them all in line. I know i had crane W2 rockers, and those did NOT fit. then i tried what i believed was a T/A rocker, and i don't think it fit either. i will honestly have to pop and cover and measure.