JB Conversions offers complete units or just the gear and case kit. The complete unit comes with a new front output (32-spline) and 32-spline rear output shaft with a bolt-on rear yoke. While not cheap, it's a turnkey unit ready to bolt in. If you want to save some bucks, use your existing NP205 along with the new LoMax case and gear kit. You'll retain the original iron-bearing housing and aluminum retainers as well as all shift forks, collars, and small parts. Rear shaft kits are also available to eliminate the late GM-style slip-yoke configurations in favor of a shorter, fixed yoke.