Dannyo,
I have the b-car front (12") disk on front and Baer Touring (11.75") on rear. I am very happy with brakes. My first and only trip to drag strip was several months ago (1/8 mile) resulted in 80mph stops and made 1st turn-off road no problem. BTW, I converted to vacuum brakes (Master cylinder and vacuum booster from 87 normally aspired V8 Regal) and had NO problem going from full boost (no vacuum) to "on the brakes hard".
The rear Baer kit went together with no problem. Hardest part was making 2 brake lines to go from "T" on the axle to the 2 calipers. Baer should have included those lines but do not. The double flare can be tricky...My advice is to buy the best flare tool you can find and should be ok.
I understand that the Baer front brakes requires you to send them your spindle and they modify it for the brakes. They can accomodate dropped G-body spindles, B-car spindles, stock g-body spindles. I have been told that the 13" Baer brakes will not fit the 16" GTA wheels. I cannot confirm or deny. Maybe someone who has will join in.
Conrad