I currently have a dodge 1986 w150 with a 318. It has a 727 auto transmission and i think a np203 transfer case. I have recently found a dodge 440 out of a motor home that has the transmission with it. I want to switch the motors. I am also considering getting 3/4 ton axles in the future and running 44 inch tires. My question is-what should I do about the transmission, transfercase, and will my radiator have to be replaced? This truck will be going through some punishment when finished.