[broughy84]

1= Us Built
G= General Motors
B= Chevrolet Incomplete (meaning it was just the cab and frame)
H= GVWR/Brake System = 9001-10000/Hydraulic Brakes
K= 4x4 Conventional Cab
3= 1 ton
4= Two door cab
k= 5.7L V-8 TBI
0= check digit (doesn't mean anything)
r= 1994
e= Assembly Plant - Pontiac East, MI
252958 - Production Sequence Number

I can't get you the drive ratio...I don't know how to tell either. I got all the above info out of my chilton's manual.

By 1994 all Chevrolet were factory EFI

Go with straight pipes and no mufflers, that's how mine is and it sounds damn good. If you want a muffler use a flowmaster 40!