Googled the jetta tdi wagon for tow specs and the euro spec is around 1500kg with trailer brakes. I think another member who tows with a vw toureg found out the same thing with the us spec tow capacity being lower than the euro spec for liability reasons. If you decide to tow with the jetta look into getting a euro sourced tow hitch.
Update: Still a work in progress. Realized that the teeth angle of the new gear is slightly different than the original gear. While it meshes together its not close enough to allow the gear to align properly. So I ended up looking around for the manufacturer who supplied the part to Burton Power. Sp Components ltd makes the gear and they have the correct V6 gear set. Even better is that the modified v6 1st gear has a ratio of 2.74:1 vs the modified v4 ratio of 2.98:1. After a month of waiting they finally told me that they will get some in supply soon (they had the mainshaft gears, but needed to get the layshafts machined to fit the new gear.)
Hazardous materials have to be ground shipped for safety. Unfortunately a lot of the "ground" shipped stuff end up being air shipped due to only either air or water access to certain parts of Alaska.
Why is there a leather belt on the exhaust side of the engine? The head upgrades might just be mild porting on the stock head with upgraded cam and valve springs. Can you get them to take of the nosecone to see if adjustable cam gears are installed? Ask the seller if they have a dyno sheet. The intake is an aftermarket ITB setup so it should have at least more hp than a stock zetec.
Don't suppose you can take off the oil pump belt and drive the pump with an electric drill? That would test the pump and save the engine from dry starts.
Tom, I just got 4 100g tubes of Hylomar universal blue off of ebay. If you have trouble finding any, just let me know and I can send you one. I got lucky and got them for about $12 each with free shipping.
Looking to replace my accessory belt for my 2004 Caterham SV with the SVT zetec. Does anyone know the part #? I just came back from the local O'reilly's and the belt they found for me is too short.