I installed the Summit kit on Wednesday. I wasn't able to do it myself, per se, but with the help of a couple friends, I was golden. It only took us two and a half hours and some time on the tubing cutter.
Was the kit a universal one or specific? I guess universal if you had to cut, right?
Also, I will be hooking up to headers....the pipe kits go to the cross members, where the headers end.....do you have to add anything in or will teh kits have it all?