1350m

If I'm not mistaken, the 1350 has 4 planetary gears vs the 1354's 6 gears. I know about the different front outputs as well. Would a 1350M hold up behind a 4.0/M5OD that isn't used for any serious off road? I'd rather have a manual T-Case, and I'm not striking much luck in finding a 1354M for...