Here's the parts you need:
- brake caliper left blue > 1K0 615 123 G
- brake caliper right blue > 1K0 615 124 G
- caliper carrier blue > 1K0 615 125 F
- retaining spring > 4F0 615 269
- brake disc ventilated 345x30 5/112 > 1K0 615 301 M
- splash shield for brake disc left > 1K0 615 311 C
- splash shield for brake disc right > 1K0 615 312 C
- brake pads with wear indicator > 1K0 698 151 B
- hexagonal head bolt M8x12 > N 907 186 02
- brake hose > 1K0 611 701 N
- brake pipe hose from brake hose to piston housing left > 1K0 611 763 A
- brake pipe hose from brake hose to piston housing right > 1K0 611 764 A
- retaining clip > 191 611 715
- bracket for brake hose left > 1K0 611 841 A
- bracket for brake hose right > 1K0 611 842 A
Best bet to find them - eBay
Here's they are behind 19s
The R32/Leon cupra Mk2/S3/A3 3.2 calipers are all the same but aesthetically diff !
I'd defo recomend 345 conversion
Read through here:
http://www.golfmk5.com/forums/showthread.php?t=64475
And this site shows you whats needed and involved:
http://www.jkm.org.uk/performance/tfsibrakes.htm
http://oempl.us/index.php?main_page...id=369&zenid=3b3f48d35c011e2ad6f67c167b2ba452
Seat sell them for £555 complete and delivered and new in Red.
And here's a mate on the uk-mkivs.net forum who done the 312 to 345 conversion.
http://uk-mkivs.net/forums/t/213612.aspx
These are the links that inspired me to do mine but trust me - the brake conversion is the bested mod I've done to date

Look great/stop great they're awesome!