We carry our Hallmark Utl XL on our SD350 with a 6.2 and it does fine, but if I had it to do over again, I would order it with a 4.30 rear end rather than the standard 3.73, which I have. Just my opinion, but while the 3.73 does fine in the flat land once we hit real mountains the grunt is just not there. 🙂
Steve and Andra
2012 F350 6.2 gasser SRW LB
Fab Fours front and rear in case we run into a rhino
2019 Northstar Laredo SC
