hey guys i need some help, i have a problem with blowing motors in my 1989 s13. i already swapped one in it, and i now need to do it again. only problem is i have a 1991 motor to put in my 1989, what do i need to use from each motor? or will i simply be able to swap just the motor, thanks for any help. by the way the 1991 is automatic, and my 1989 is 5-speed...keeping the 5-speed configuration

 

you are probably going to need an ecu, wiring, steering lines, clutch hydraulics, pedals, mafs, and slew of misc parts. best bet is to find a wrecked dohc and get all the parts.