I am new here to the forum and i have done some research but not finding exactly what i am looking for. I bought a 94 SWB chevy Cheyenne about a year ago with a 4.3L and its starting to go out on me so i was looking into swapping the motor for a 5.7 vortec from a 98 silverado or maybe a 5.3 from a 2002 silverado. which would be easier to swap as far as motor mounts, wiring harness things like that. Also what transmission would be best paired for either. Also will i have to swap out the dash as well. I have already started tearing down the front end to make it a little easier to swap.