fitted the ti master cylinder today, and did it the front rear swap, the brakes felt ok but not right, i swapped it back and they are good. There was air in the rear system, maybe that was part of the problem, i only reolised when i got back and bled the system again.
Brakes seem good, but maybe its the tyres on the car that are the limiting factor of my brakes, they are maxsport RB3 which is a forrest tyre, but good for the roads and the rallying i do.
As i say im going to do a vented disk conversion soon, god the bits just need to make some mounts at work
thanks for your help mate!