If you havent seen it already, there's a thread here exploring the possibility of adopting VW (primarily late model Golf) components as replacements for the dwindling stocks of Cortina and Escort parts.
The dimensions of the following components are required from a Mk IV Golf/Jetta/Bora/R32 ('98-'03) or in the US, A4 Golf/Jetta/Bora/R32 ('98.5-'04):

1. 5-stud front and rear hubs.
2. Outer CV/stub axle and axle.
3. Rear bolt-on stub axle.
4. Solid (9mm) and ventilated (20mm-30mm) front discs.
5. Solid (9mm) and ventilated (20mm) rear discs.
6. Aluminium rear calliper.
7. Tie rod end.
8. Manual steering rack.


Maybe you know someone who works in a VW dealership? If you have any trade catalogues with dimensioned diagrams of any of the items, then I'd welcome that info too.
If you have the parts, but aren't sure how to go about extracting the data, email me and I'll gladly give you instructions on how to accurately take the measurements.
If you can help with dimensions of any of the above parts, please let me know and specify the model and year please.
I'm also happy (in fact I would prefer) to receive actual parts and reverse engineer them myself, so if anyone can source any of the parts and post them to me, I promise faithfully I'll return them within a week.
I've seen most of the parts appearing on eBay, so perhaps some of you who are interested in this project would consider buying even one item each or sharing the cost of one item with others to get this project underway.
Just one of each component is all that's necessary.

[Edited on 19/11/05 by Rorty]