If you want a good durable lifter, go w/ the Iskys w/ the bushings. I have the old style Isky Red Zones w/ needle bearings and they've been flawless. Bought them in 2006 before the EZ Roll option was available.
Another small detail on the Redzone lifters,,,,,they hit the thicker lifter bore on the megablock
HEMI-ITIS has no cure. My condition is fully BLOWN!!
