1990 G20 Model 21305. It's a Vin K. 6600 GVR. MD8 and it's a WBM model. It also has the GU4 which is the 3.08 and G50 which is the 3400# springs.

It had a 1227747 with ASDU. Now I have the 16197427 with BJLF out of a '94 Silverado 1500 5.7 LTR.