I have 2 complete trucks. I have a 89 3500 with a sick 454 gas guzzler and a 91 1500 with a 305 that runs good. I am thinking about puting the 305 in the 1 ton truck, after a rebuild while I have it out, and continuing to use it pulling farm stuff and heavy loads of wood. How much power will I notice loosing and is this a good idea? Most of the miles I drive are on the road but I could be pulling up to 6,000 - 7,000 lbs. at a time when I need it.