I have an unusual setup I would sell - 42mm twin-piston floating calipers that will bolt to the 944 NA front knuckle and fit over an 87+ turbo front rotor. It's all GM parts that I slightly modified to make work.
I have these parts currently on my early 944 (with a different 28mm thick rotor), but am looking at doing something else so these are available.
This way you don't need to change any of your other suspension stuff - just get a late 951 rotor and bolt my calipers on - might need to add a spacer between the caliper mount and knuckle but I don't know for sure how thick.
The 2x42mm pistons on a 299mm rotor give approximately the same brake torque as the famed Porsche "big red" calipers but this would be a fraction of that cost...PM me if interested and for more info.
