Casey, you'll need to figure out the water line coming out of the head. It will hit the fuel tank if not modified. My conversion is a 1Z which is a little different from the ALH. I use a custom rear hangar going under the engine near the crank pulley. That hangar supports both left and right sides of the engine. It is in-front of the oil pan - not under it (i.e. rear most in vehicle). I think this could be done on an ALH also. Paulie's was unusual in how he did it but it did work nicely.
I deleted the bellhousing transmission mount and only mount the trans by the front nose cone. This has been OK for 50K miles and the vibrations are not even really noticeable. The bellhousing mount will transmit a lot of vibrations into the frame/body.
Cooling system: I am using two rabbit type radiators in series. They are boxed into the frame but my box is not airtight. If it was, I could have maybe used less radiator. There are fans but they are only needed at slow speed on a hot day. i.e. going up a windy road in 2nd gear or driving 75 MPH uphill in hot weather.
There's way more hoses than stock and I was concerned that something in my setup would break, I'd lose coolant and fry my engine. This has happened to another TDI bus guy so it is a real risk. I build a circuit to check the water level sensor. if it gets low, I get a light and a piercing loud beep.
You didn't ask, but you will NEED to regear 3rd and 4th gear both for strength as well as to drop the RPMs. I have .77 4th and 1.18 3rd and I'm also running much larger tires. This was the crappiest and most expensive part of my project. Other options exist and if I were doing it again, I would not regear but instead use am upside down TDI trans from a longitudinal mount car. This is better because it is built for TDI torque, has the proper ratios and costs much less. The down-side is more fabrication.
There's lots in my thread but the pictures got lost when the host crashed.
Here is my general advice and what I did:
1. Read about TDI conversions into Vanagons. Those are plentiful and you will get good ideas here for everything except engine mounting and cooling, which are different in your application. There is info here and also a TDI Vanagon Yahoo group.
2. Read about Bay Window water cooled conversions. All of these deal with mounting issues and cooling and the TDI part isn't relevant.
3. Yes, look at other TDI Bay Windows threads both here, thesamba.com and brickyard in the UK.
If you copy all the good ideas, you'll be way ahead. Still expect it to be a bunch more work and cost than you think.
Good luck & post lots of pics!
Mark