Will 1996-98 Toyota Tacoma body parts fit on 1989-94 Toyota frame?

yes but you need to modified. this is for a complete body swap. prior to install tacoma cab on 89-94 frame you must une a 3in body lift to clear gaz tank because the tank are other side of tacoma, the rear body mount fit direct the second in the front of door must be slotted 1\2 in per side. and for the front under the radiator you must drill 2 new holes really easy. the stering colum must be removed and use older shortened rod. for the bed ,tacoma use 6 bolt and older 8. you must extend 2in rear frame and make a plate 11in x 3in and bolt them to the frame dril an hole in center. now the last thing is the fuel door is o the wrong side me i prefer make a long tube to fill the tanks by the other side or you can sheve them and reintall them on the left.