Going 4mil.which Cylinder setup?Driveline,wampus or stock cyl

[fixitrod]

Whatever you get consider having a needle bearing put on it if it's using ball bearings. I have a hotrod crank but had it rebuilt before installing it with TZ Needle bearings. It's a 4 mil long rod. I had several dune trips and my track trips on it. I got tired of blowing up engines from the damn bearings failing.