Hello to all.Just dropped the ole 4 banger scene and hit the V8's.lol got myself into a 2001 Silverado,the truck has the 4.8L decently modded motor( heads,cam,tune,long tubes and exhaust) 4:10's eaton posi but I want a motor with some big N/A potential and I'm pretty serious about getting a LS1 into this truck.Finding the motor isn't a problem,but does anyone know how difficult this is and if I can retain a/c and p/s.Any help would be greatly appreciated.