what would it take to put a NV4500 in place of a 10 spline 465? would i be able to use a 465 bellhousing to do it? i know i'll have to modify or replace the 205 that is behind it. i'm thinking of trading my 91 K1500 for a '79 K20 with a 465/205 and 4" of lift on it. the only thing really holding me back is the fact that it isnt an OD truck, so its gonna be pretty rough on gas compared to my OD/3.42 gears i'm used to. i know i can go hydro clutch in the 79 no problem, but i'd just like to have that extra gear. BTW the plan for the truck is a DD/tow rig.