[scott123]

i went from a 3 speed/rockwell to the 350/NP205 just recently...had to shorten the back drive shaft and lengthen the front...i had to heat and bend my shifter because it didnt want to center the hole in the floor board. and you will also have to change the radiator if yours does not have cooling line option...running new transmission lines as well....if your radiator has the cooling line options flush them because all kinds of dirt, grease and crud will end up in your new transmission....not sure if it is a weekend deal, unless you prebend your lines, and have everything handy to make the swap...miine ended up being a two weekend deal... good luck...scott