hey kent,
are you buying a complete brake kit from performanceonline, or just the rotors ?
i bought a complete power front disc brake conversion from them for my 57, and their customer service stunk.
in hind sight i would have bought just the booster and master and mounting bracket and bearing spacer from them,a nd gotten the rotors, calipers and pads from the local autozone.
i paid 100 bucks in shipping for the entire kit. but the rotors and calipers are standard 1970-1978 camaro.
got any pics of your truck ?
good luck with the install.
leonard