Originally Posted by _cy_
it's been done before... someone makes a GM to toyota tranny adapter for V-8 engine swaps.
Cummins are made to go into most anything, an adapter for GM is not much a stretch for Cummins . 6BT is what's in my 12 Cummins 2500 dodge. too heavy for FJ60 .. front end would need to be beefed up, sag too bad.
4BT is a 4cylinder instead of 6, much lighter... no lack of HP even wth 4BT.
The 4BT is around 700 pounds, depending on how you dress it up. If I remember correctly, that is about what a fully dressed 454 big block weighs. That is about what the 2F weighs in the FJ60.
So, for weight...
4BT = 454 = 2F