[El conquistador]

I got mine at Advance Auto, I just ran accross the SSBC instructions on line. I was just wondering about the difference. If GM changed the location of the front vs rear lines from the 400 to the 800, then SSBC may just be covering their butt by keeping the factory "front" activating the front brakes when you switch. It's easier to keep the lines in the old position, but there is plenty of flexibility in the lines to switch then...if needed.