I've got some 2 pot rear calipers + discs from a 2005 WRX with a kit like this to fit them: http://www.godspeedbrakes.co.uk/Suba...fittingkit.htm I've got a MY99 classic, is there a guide anywhere on how to fit them or should it be pretty obvious once I try to do it anyway. Any advice appreciated...

 

When you get going it is actually really straightforward.
Don't forget to take the handbrake off, and have some m8x30 bolts ready in case the disks aren't willing to come loose from the hub.