I've got a ' 74 Ramcharger 4WD with Torqueflight 727 and a warmed over 360 and I'm contemplating swapping out my heavy cast-iron full-time NP203 to a NP242 part-time/full-time aluminum cased unit to cut down on weight and give more wheel drive options. I don't want to give up my full time 4WD or I'd just switch to a NP205 or NP241. Have any of you had any experience successfully pulling off this swap? Will the NP242 handle big-block torque? Will I have to change out my nifty big-ass chrome stock transfer case shifter?