We are now offering a Manual shift conversion kit for the Ford NP271 transfer cases found in 1999-2010ish F250 F350 F450 and F550 trucks and excursions .. these are chain driven electric shift transfer case Np273F.
This kit is bolt-on and can be done with transfer case still in the rig . This gives you a manual shift 2wd , 4wd and 4×4 low .. the case does not have a neutral gear .
https://www.ebay.com/itm/305227635921
We are the Original designer and manufacturer of this kit .. there are multiple knockoffs on EBAY and other places selling a copy of our OLD first model kit .. Plate is thinner .. non stainless bolts ect