disc brake setups...front/rear
It was about a grand for the front setup 5 years ago. I haven't been able to afford the rears yet LOL, but the fact they have matching fronts and rears available was one of my main reasons for going with Aerospace.
Plus they asked me what size free t-shirt I wanted and they sent one that actually FITS. :-D Everybody else always socks me with the XLs that drape to my knees.
If you do a search for Viper you might be able to find what you're looking for. Since my brakes are done for now, I don't read much of the brake threads.
Good luck with the decision!