I have found porsche calipers. Has anybody done this and have a diy or something. Pretty much sure I need brackets but would like to know how the it goes.
Boxster S calipers are not a performance upgrade over 330i calipers and rotors. I measured them and prototyped brackets more than 10 years ago. The pad volume is no better and the pads are very expensive.
I believe my track days numbering in the triple digits, thousands of autocross runs, SCCA regional Solo 2 championships, and multiple endurance race podiums (LeMons) give me a pretty good knowledge base for offering an opinion in this area. In my opinion, a slight improvement in caliper rigidity is not worth the hassle when the required bracket is big and difficult to make and the pads are expensive. In my experience, I get good performance and pad life out of stock BMW brake systems with their single piston sliding calipers. Bolt-on factory upgrades such as a 330 system on a 325 provide huge performance for dollar. If the Boxster S caliper offered a significantly larger pad volume and longer useable track life, I would suggest trying them. They don't so I don't recommend them.
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