front discs
 

If you already have stock disc knuckles in front, bolt on some
1978-1983 BMW 320i calipers. Theyre Ate just like stock, but 2/3
bigger, with 40% more pad area and 200 psi more to squeeze with. I got the idea from the porsche 914 guys, and went to the junkyard and bought 2 320i calipers, and 2 914 rear e- brake calipers. I will soon convert to rear 914 disk setup, I just need adapters.

Saab 900 are the similar too..

Welcome to GL.com :)

apparently these calipers are the same as Europe's talbot horizon
calipers. Mine cost $100 with pads and hardware.

ok they were a bad idea dammit.

Re: front discs
 

Hello-


If you already have stock disc knuckles in front, bolt on some
1978-1983 BMW 320i calipers.

They won't work...

The 320i, like the Porsche 914, the Type 4, and the very late Type 3 (72-73), has a 76mm bolt spacing for the calipers. However, the Type 1 has ~2.25" (not sure of exact number).

The Talbot Horizon, available only in Europe, has the same bolt pattern, but is slightly larger. I've tried scouring junkyards, and found that some old BMW, Mercedes, and Volvo cars also have this smaller size, but they were only used for rear calipers and so the pistons are even smaller than Type 1.

Type 1 pistons are 40mm. Type 3, Type 4, and Porsche 914 are 42mm (some say that if you can find _original_, unreplaced 66-71 Type 3 calipers, they are 42mm and bolt up). BMW 320i is 48mm. I'm not sure what the Talbot Horizon has.

Take care,

I found that out the hard way, by buying them and then trying to
fit them. uhhh wanna buy some calipers? maybe I'll grind out the mounting holes to fit.

bolt spacing
 

As near as I can measure it the caliper bolt spacing on a Type I Karmann Ghia spindle is 56 mm.

-Regards, Mark.