Seriously, just don't. Unless you like spending money hand over fist to have a vehicle which is completely impractical and only works for a maximum of three months before it ceases to work again usually for no apparent reason.
Secondly never, ever decide its a good idea to do a modern engine conversion in an ancient VW. You might as set up a direct debit to pay your wages in to a black hole, and you'll still end up with random wiring in the engine bay that doesn't apparently go anywhere and an engine that just won't have any of it.
I could have bought a decent 996 for what I've spent on this bloody thing and have a car that actually turns over. And has heating.