rear was centered. it stuck out the same on the other side.
I think our 3rd gens are 4.5" backspacing with 0mm offset and the 4th gens are 5.5" backspacing with +36mm offset.

just looked up some wheel info at Skulte.com

Rim Name Size Offset Backspacing Suggested Thickness (3rd Gen)
Corvette 84-87 16x9.5 38mm 6.6" 2"
Corvette 88-96 17x9.5 56mm 7.3" 2.25"
Corvette GS ZR1 style 17x9.5 50mm 7" 2"
Corvette ZR1 style (Low Offset) 17x9.5 38mm 6.7" 2"
Corvette ZR1 style (Low Offset) 17x11 36.5mm 7.397" 1.25" Rear
Corvette ZR1 style (High Offset) 17x9.5 56mm 7.4" 2.25"
Corvette ZR1 style (High Offset) 17x11 50mm 7.93" 2" Rear
C5 Corvette 97-2000 17x8.5 front 56mm 6.8" 2"
C5 Corvette 97-2000 18x9.5 rear 63mm 7.6" 2"
C5 Corvette Z06 17x9.5 front 54mm 7.2" 2.25"
C5 Corvette Z06 18x10.5 rear 58mm 7.9" 2" Rear
Camaro 82-92 16x8 front 0mm 4.35"
Camaro 89-92 16x8 rear 16mm 5"
Camaro F1 ZR1-style 17x9 50mm 6.8" 2"
Camaro 93-97 16x8 55mm 6.5" 2"
ROH ZS 17x9.5 5 mm 5.472"
ROH ZS 17x8.5 -7 mm 4.5"

 

thanx Zep, i saved that for future ref.

 

Now you know, the 4th gen rear is wider and give you that old time "Ponitac Widetrack Look". Just add bigger tires and really get wide.

 

one of my hardcore oldschool poncho frinds would be quite pround of ya for think like that.