Total cost of my setup is (CAD):
Use EVO 9 2007 caliper (2): $250
Standard Raybestos 2005 WRX STI disc (2) : $140
Standard raybestos Mitsubichi EVO 9 brake pads (4) : $50
Bolt (4): $2.00
58 to 60mm bore machining (2) : $25
TOTAL : $467.00 tx and everything include ( no labor, i do it myself)
Here is some pics of my install + some tips :
Both MK3 and EVo bolt will not be correct to use. The evo bolt are not long enough. You need to buy 1/4-3/8 longer.
I use some 7mgte head bolt washer to space the caliper. They are perfect. So if you have some spare, go for it.
For the dust sheild, you only need to cut the 90 degre part of it (the lip). I apply paint where i cut to prevent rust.
I use the stainless brake line that come with my caliper, i think this is the stock one.
Oh, i did not mesure inside the disc for the hand brake, but it look like they are a little bit smaller. Reason is that my handbrake was in need of a little adjusting and now it is just perfect, 5-6 click make it perfect. So you may need a little adjusting depending of yours.
You can see the washer spacing the caliper
Sawblade fit (2-3mm space) But i will not run those anymore since i will be upgrading the front too. I test fit just for your info.