I had upgraded to SS line and EBC "HH" pads but was still wanting more. That had good initial bite but seemed to drift off in long stops, like it was loosing feel and bite.
So, 2002 GSXR caliper and EBC "HH" pads with my buddy's fabbed aluminum bracket are bolted up. The result, another step closer to what I want. It is as far a gap from my ss line and pads in the stock caiper as that was from stock. I can leave it and enjoy it as it is with no issue, but I'm thinking a new 14mm master ($40 on ebay) will put it in the premium category in feel and power.
My buddy is going to test the feasibility of building these brackets in steel next week to offer them for sale. They should fit the 300s and at least 250 back to 08. Stay tuned if you might be interested, and I'll help him post up in the vendors section if it works out to be affordable.
My caliper cost $25 shipped on Ebay, Pads were $35 and the SS line $50.