http://www.clubgti.com/forum/showthread.php?t=115939&highlight=buying+guide
well do a search mate theres been hundreds of these threads !
I can pm you a paragraph or 2 about mine to convince you to buy it if you like. Has none of the faults listed on the guide as everything has been replaced and has most of the engine mods and maps that you'll read about so you'll never have to search again......,
http://www.golfgtiforum.co.uk/index.php?topic=38557.0Mine is a mk4 btw