
Originally Posted by
GasGuzzler
Hardly any S-10 would have an 8.5. That's rare. The 28 spline 8.5 is more common to 70's F and X cars.
The part # is for 7.5"/28 spline
'03 GMC 2500HD CCSB SLT/6.0/AFE Stage 2 Cold Air/Magnaflow Cat Back/ 8in Fabtech Lift/ 37x12.50x17 Cooper Discoverer's/ 17x9 Raceline Wheels/ Debadged/ Vortec Performance Tune (COWL327)