You didnt say which block you are using..but the BEST roller lifter out there are the crane ultra pro's 5 years thus far with zero issues, nice lifters.

Dropped right in my X block, but i run bushed lifters BECAUSE i pushrod oil with Jesel rocker gear.

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8