It's not a disaster, just a couple of easily overcome hurtles. One thing is where the exhaust manifold and turbo sit on an AAZ will cause interference with the left side engine support. There are 2 ways around it. Either you or have someone fabricate a new support ,side stepping the AAZ setup, or use an exhaust manifold from a JX engine and the appropriate turbo to match.This would be my preference and i even have one of those manifolds to sell [imagine the coincidence!], as i'm not going to bother turbo changing my Transporter. The other issue is the oil drain for the turbo. There may be a question as to whether the drain that goes into the block is low enough. The better way is to use ,again , a JX oil pan [got one of those also!!!], and have a new drain line found or made up.