Attention: My apologies, the adapter to suspension bolts are 30mm long, not 25mm.
A vender just dumped some unsold adapters on me as payment. please email me so I can keep it fair in the pecking order. bigd9146gt@yahoo.com. Shipping from San Jose California.
911/9146 front for 3.5" bolt spacing. Pair of adapters NO bolt hardware $125.
Stock Boxster non S calipers will accept 911 Carrera 24mm wide rotors. Not sure on S calipers rotor options, but should still bolt up and accept even wider rotors?
914/9146 rear adapters 3.0" spacing. Pair of adapters NO bolt hardware $125.
Rears to be used with Boxster non-S rear rotor, 20mm wide. Emergency brake is up to you.
Bolts needed:
Caliper to Adapter: M12x 70mm long, 1.75 thread pitch (4 per adapter pair)
Adapter to Suspension: M12 x
Just for redundancy: a front OR rear kit needs 8 bolts total, 4 long, 4 short.