thats a nice lookin truck...I wish i would of waited to buy a dually instead of my single wheel one ton....oh well....mines a 92 Cummins and it pulls 100 times better than any 318 i've had....i don't know how much our case 400 w\loader weighs (its pretty heavy) and it pulled it great..i could tell it was back there going up and down hills going up the hills i didn't have to leave 5th gear except for one or two steep ones and going down wasn't bad it just liked to push...but i don't think i'd trade a cummins for any other motor when it comes to pulling loads...i love the power ...