Sorry to piss on your chips but seriously, just stick with Toyota.

Oddball swaps are best left to those with the time, patience, money and engineering facilities to get them through the challenges.

Sure a 3vz/1mz may cost more initially, but the hard work is done. Everything is plug and play and documented. Planned well, I reckon the swap could be done over a weekend.

What your planning, I fear would be a year long thing ending in a for sale post/eBay add.

Just my 2p!