4wd conversion
 

hey guys, im looking into replacing my stock 3speed with od for a nv4500. i have that part figured out but i need help with the transfer case and front axle. i have been told a np205 will work for a transfer case with no mods. idk if thats true or not and idk what determines if it will work or not?

my second problem is idk what i need to be looking for for a front axle. i was told a dana 60 but i have found 4 and they all have different gears. so, i want to build my truck to about 400 hp eventually and i pull a 7*10 enclosed trailer almost every weekend with minor hills mostly flat ground loaded with a couple bikes a quad and some gear so it probably only weighs a few thousand pounds so, what should i be looking for for an axle and for a trans case? and i will have an auto tranny for sale after this is all said and done. it shifts fine and doesent slip whats it worth?

thanks guys, -tanner:c:

go for the factory dana 60 from these trucks they have the king pins and are probably the most favored out of the heavy duty trucks!