did you change the under rug plastic air duct?..if you just cut through it it will smell in the truck..plus not flow out to the back... i've been looking for one from a standard trans crew cab truck ...you may want to make a runbolt able trans hump as the g56 is really wide and the oil fill is gonna be tight to your exhaust etc.. you going to use the dodge transercase and adapter / get rid of the slip yoke?..if you use the ford transfer case you can do it with a advance adapter to mate the 29 splines to 31 etc ..nice build.. my excursion G56 is delayed from lack of funds...
thanks,
Deo