So while I'm rummaging around, looking for exhaust header gaskets, I open a box and find a set of calipers. 2 are brand new and 2 are used.
The new ones have smaller pistons and are part number 993.352.425.10 and 993.352.426.10
The second set, I cannot find any part numbers on the calipers, but they seem to have larger pistons (about 48mm and 38mm) by my rough estimate.
The new set has 3 1/2" drop hole spacing and the older ones (I am assuming fronts) have vertical holes, so I am assuming I would need an adaptor
I have posted before that I am looking for upgraded calipers for my 75 911, that if my memory serves, has 3 1/2" spacing in the front and 3" in the rear, so I am assuming I need to reduce the hole pattern for the new ones to go on the rear 3" and the calipers are 3 1/2" (smaller pistons) and I am assuming someone sells an adaptor for the front ones?
So here is my question;
Fronts.
1. Who sells adaptors go go from the vertical holes to a 3 1/2" pattern
2. what size and offset rotors work here
3. what pad sizes?
4. who rebuilds and powder coats calipers? - estimate on cost?
Rears.
1. How to I get down to 3" spacing (from the 3 1/2" now)
2. Rotor size and offset?
3. Pad sizes?
Thanks!
