my 83 s3 master cilinder with servo woulnd any see a problem with it powering four brake calipers as to 6 wheel cylinders as im thinking of doing an axle conversion just that some thinks that the master cylinder might not be up to it and end up with even craper brakes or none.

I think if you put a 109 master cylinder on it would be ok, but I'm no expert. Good luck tho