I just upgraded to Project Mu SS lines on all 4s to help with the brake feeling and stopping power but it still leaves me a nagging feeling. salvage yard sold the calipers to another person. I will go with ebay again. with regards to brembo and other AfM bbk, I like the notion but for practical application its an overkill, I only use the car during summer season here in Finland so the BBK upgrades I am left with is to stick with either LS calipers and GS calipers that can be bolt on/custom brackets.