Camshaft Belt Tensioner (16V, '86-'9 [109 056] - $35.00 : Techtonics Tuning, VW and Audi Performance Tuning and Repair Parts

I'm after one of these with the 10-8mm stud/washer/nut so that I can convert to manual tensioner on my BJX 1.8T 20V. If anyone knows where to source these domestically or has one themselves, please let me know.

thanks
sam