GM 4L60E Transmission To NP231 23 Spline Transfer Case Adapter 1987-10 Wrangler;1984-01 XJ Cherokee;1986-92 MJ Comanche;1993-04 Grand Cherokee;1993-96 GM 4L60/4L60E 4 speed automatic transmission to the Jeep NP231 transfer case with a 23 spline input,adapter kit.;Transfer Case: Jeep NP231 (23 spline) [AX-15]Jeep NP231 (23 spline) [NV3550 and TF999];Transmission:GM 4L60, GM 4L60E Early Model (1992-1997) and GM 700R4 Advance Adapters Advance Adapters GM 4L60E Transmission To NP231 23 Spline Transfer Case Adapter - 50-0402 50-0402 Transmission Adapters