If you want to do towing, the long stroke of the 383 would certainly be boss. And about all you need to change is the carburetor. I think the most disappointing 3/4 ton pickup I ever drove was a 2000 GMC with a 350. It just didn't have it with a trailer. It got rear ended when it was 2 years old, and I haven't had the urge for a 350 since then. My latest pickup is an 09 with a 6 liter. It handles a trailer like what I expect, and a 383 will do the same thing, maybe even better.
