Funny thing was that I had myself convinced that a 6.4 hemi 2500/3500 would have worked just fine. Our racing has slowed, the boat has sold, and the only other toy is a 14ft open trailer for the RZR. Worked on a customers 3500 SRW 6.4 hemi 4.10 gear AND factory 50 gal gas tank, I was like...