Yes, you can keep the box as above, you need the GTX engine mount for the front & also the GTX or Volvo alternator mounting to block.
You can re-drill the GTT mount to make it fit, I had to & it worked ok, I had to elongate the holes I made to make it sit right, maybe get some cardboard to get the pattern then drill once, unlike me :mrgreen:
There may be a write up in the DIY section.