I'm going to pick up a 1995 Chevrolet Silverado K1500 this weekend. Does anyone know if it was still TBI in 1995 or if Chevrolet converted to Vortec? I'll be able to tell when I pick the truck up, but lookin for answers sooner. Also, if I had 2 engines, let's say 1 is a TBI 350 and the other is...