mine was from race daddy too! but mine was a worse fitment lol.
All the holes on the header to the block were too small, had to drill them out. came out about 8" short from the 2nd cat, and I had to cut off the piece at the very end of the downpipe, because the "in" on the cat is 1.75" and the piece at the end of the headers downpipe is 2". So I had to cut it off to make it sit flush, and just used some cheap exhaust sealer and extended the pipe obviously.
If you do it your self it ends up a $20 project for piping and sealant
. but it is a pain! so if you have the money go to an exhaust shop, but if not its not tooo hard, just need the time, and I can tell you exactly what I had to do, which save alot! of time.