Roller Lifter options that use OEM alignment bar

I have a 5.9L from '95 dodge truck that was rebuilt into a stroked 408. It has a Hughes roller cam 240/242. The engine builder cleaned up the original roller lifters and installed with the original guides. It has run since 2008 with that setup. I drag race it with shift at 6000 rpm and rev limit set at 6500. It has never been apart and never had problem. I probably should refresh sometime but it runs so good. Don't really want to touch it yet. The mopar original roller lifter assembly is pretty good for mild cam.