I just got a great deal on a 5 lug swap from a turbo II, it came with the hubs F+R, front four piston calipers, a TII prop valve, and a TII master cylinder,
I'm goin from a base 4 lug car, i noticed that my master cylinder is a 7/8, which is the same as the one i just bought, are there differences?, also, it came with no rear calipers, can i buy TII rears, and vented rear discs and have everything work out?, is the turbo rear caliper compatible with my base caliper bracket, or do i have to hunt for a set of rear TII brackets?, also i've been having trouble finding a rebuild kit for the four piston calipers, anybody know a good place to buy a kit for the pistons? (seals, rubbers ect...), thanks for any help/ advice!

 

try to google some of your questions ...you may find the rebuild kits there

 

bump

 

you need the bracket and floating caliper from a vented rear rotor 5-lug car...

 

I thought so...

 

Mazdatrix sells the rebuild kit.

Unless you track the car there's no need to worry about the rear calipers.
The only difference is the slightly wider rotor, you gain nothing in terms of stopping power.

You can use your current- and conveniently, already installed- booster/MC.
Pedal travel will be a bit longer but it will work fine.

 

The MC is the same, the booster and P-valve are different.

 

All the S5 boosters, MC, and prop valves were the same for non-ABS cars (read non-turbo for North America save a few exceptions)....regardless of the rotor and caliper types.

Only the ABS S5 cars had different MC, booster, and prop valve.

There were a few different combinations for S4s. If these are parts from an S4 i cant really comment.