I don't have any advice on how to do it, but it sounds like an excellent idea to me. I think the 5.3 engine is WAY better than the old smallblock, from fuel economy to performance. I have a 2000 Chevy 4wd pickup extended cab and I can get 19 mpg on a long drive, 15-16 on short trips. It also has far more power than any pickup I have had, although it is my understanding that the new Dodge and Ford has more power but at a sacrifice of fuel economy. It has more than enough power for any normal person.
