To mate our 4L80E to the NP203, we changed the NP203’s input gear to a 32-spline TH400 unit, ordered a factory 4L80E transfer case adapter on eBay, and redrilled the face of the 203 to a new ...

When it comes to wheeling, options rule. There is a new player in the transfer-case aftermarket, and the new STaK 4x4 three-speed Monster Box has more options than anything else currently available.