Got one fitted to my 16v, but it is used mainly on the track.
Noticeable difference in cornering on the track.
Easy enough to install, you need to drill the top of the towers to bolt them on. Only slight problem was I needed to move the coolant expansion tank forward by about 15mm to stop it rubbing on the strut brace, a couple of straight brackets from B&Q solved this.
The design is slightly compromised strength wise, ideally it should be straight and have triangulated fixings to help stop forwards and backwards movement, but then we are talking motorsport use.
Item no 200215917178 on ebay lists 16v fitment, but then some people will say anything to get a sale.
Rear ones seem to be generic for Mk2 and Mk3's but they dont look meaty enough to make a real difference in my opinion.
Cheers
Paul