I found a real nice old k30 dually locally. Truck is perfect, except for one thing. It has a 350CI. 4x4, 4spd, real clean, but think it would be way underpowered to tow 10-11k lbs...

How big of a project would it be to install a 454?? I know the tranny would bolt up, more concerned with accesories, mounts, etc.

SO far i have found two real clean trucks. One is a 454/auto 2wd, and the one above. Same price, same options. But the 2wd truck is about 350 miles from home. The 4x4 one has under 60k original miles and was a municipal fire and rescue truck......