My friend had an 89 W150 with a 318. it was a short bed, std. cab. We hauled an open , steel trailer with cars, other, bigger trucks, etc, all while the bed was loaded with parts, engine hoist and even a 55 Hemi once. The truck LOVED it. Best towing little truck I've ever seen.
I'm not positive but I think the truck had 3:55 gears in it too.

Mr. Norm's "Fanatic" (idiot)
71 Mr. Norm's Demon GSS
77 Mr. Norm's personal B250 GSS van
76 Mr. Norm's KZ900 Motor Sports Special
69 Mr. Norm's M code Dart GTS
69 D100
68 Barracuda
64 Valiant V200
07 Charger Daytona SST 6 speed test mule.