I failed to mention my trucks not wired for mds, the engine was built using
regular lifters, the reman block just had the holes for mds, so yes your right,need the right ones, I just had to plug the holes.

86 Daytona - 612/ glide - 2400lbs - 8.60 alot more left
71 S/G Challenger - 469/glide - 2800lbs - 9.20s and tuning
70 Challenger - mild 440/727 - 3475lbs - 10.96 best
70 GTX - future quick 16? more $$$$$$