GM NV3500 Getrag 290 5sp Full Size 3rd Design Transmission Cluster Shaft 1991-93 1.180" Outside Diameter Journals (ends) 290-8AR MG5, HM290 NV3500 Mainshaft for NV3500 GM 1991-93 1.180" ends, 1" Groove 34-28-22-14-14 Tooth Count Identify this transmission by its Aluminum case Rear load. Will work in the 3rd design with 0.9" input an output bearings and 1.180" ID Counter shaft bearings. This shaft is in stock now! Ready to ship!! If you need help figuring out which shaft you need please feel free to contact us; we will be glad to direct you in the right direction!!!