For ABS I will use a modern Volvo unit (with stock wheel sensors). A friend of mine has done this to his car and the brakes are unbelievable good. This is a stand alone unit and the install off the abs unit does not concern me. The biggest problem for me is getting new hubs that can take abs sensor.

Guess I'll have to buy a set of cheaper tires bleed the brakes once more, and try to adjust to non ABS braking without flatspotting and ruining a set of tyres every trackday