Morning ladies.

Issue: Got a Daihatsu Delta truck which uses from factory a Toyota 5R motor, 2lt, single cam, etc. The motor is essentially passed its used by date and im contemplating rebuilding or replacing.

What I want to know: Out of the "R" series motors, I want to know if the 22R or even the 18R will bolt up to the same gearbox as whats behind the current 5R and also if the engine mounts are reletively in the same position etc? OR if there is a diesel equivilant that will bolt up.

Also, in case the easiest option is replacing the 5R with another one, what cars are they most commonly found in?

This question would probably be better suited to toymods maybe, however I cant seem to be able to sign up there.