Better brakes are always a good thing and with the 33X12.50's and all the extra armor, in my case they're a necessity. I'm puttin' together the parts for a rear disc brake conversion, goin with Nissan 300 ZX calipers but which master cylinder to use eludes me. Ack's facts had a link that suggested that Subaru Imprezza's bolt right on Sammies. Will they bolt on similarly to a 93 Tracker? What about Mazda 929's MC?