i have a 1986 chevy 2wd c10.. im getting a 1978 4x4 frame..will the c10 body fit right on to the 78 frame with little modifacations or will i have problems with the cab bolts or front radiator support mounting?also on the transmission..its a standard on the 4x4 frame but i want to use my automatic transmission out of my 2wd.i was told i can switch the shaft in the auto transmission so the splines will match the automatic transfercase that i boiught is this right?