I would imagine they would ONLY be factory installed on EXT 4WD V8s with all options. Not sure what vehicles ever had 89's from the factory. Too much was lost when they went out of production and design staff scattered.craabe said:... 88 springs i should find on the ext tb right???
Avalanche, Tahoe, Escalade, etc. from 2007+ when they changed the spring perch design to match ours. The dirty little secret is that the Z71 suspension package actually didn't change the spring itself as far as I was able to tell on those platforms, so a stock spring takeoff might work the same. Just look for it by part number if you can. 25978750 (new number) or 15234633 (older but still useful)and the z71's would be on a z71 avalanche???? .