ive decided to drop my 355 in my 92 1500 W/T with the 4.3. I was told i needed a new computer and someone to shut off the fuel governor because the truck thinks its a V6 still and shuts the V 8 off at 4250 (this was in a S10 though) so i need to know if my truck even has this governor and if i switch to a carb do i still need this stuff?

and any recomendations for a posi rear end and some sticky tires for the back would be greatly appreciated. for the rear end im thinkin a 10 bolt posi.