d300 4×4 conversion (1969)

First time post .......so.......dont beat me up too bad. My latest project is a 1969 d300 dually cab-n-chassis...138" wheelbase. I am going to build a "camper" out of this behemoth, using the original 318/thermoquad/a727 combo. I purchased this from the original owner last year and it has 52k VERIFIED ORIGINAL miles, used only during harvest season as a crew support vehicle . My mission is to convert this beast to a 4x4(er 6x6). Thankfully, the front axle is already the old-school straight axle, so my thoughts are as follows. Adapt a dana 60 dually ft axle assy....and hopefully...get a trans/transfercase setup from a later-model mopar truck. Ft driveline would likely have to be custom-built, but, no big deal there. Since this truck was born in a non-computer age era....the trans/tcase unit will have to be compatable with my prehistoric system....meaning, no computer assisted trans interfaceing stuff. Would a 1980's full-grown dodge truck 4x4 trans and tcase unit be a possible "bolt-in" solution??? I am dealing with a generic 318 block bolt-up/etc. ANY input would be greatly appreciated....thanks.bob
Author: cactusbob