http://detroitspeed.com/productpages/subframe.htm
http://store.nexternal.com/shared/St...unt2=230414986
I have DSE plates on a DSE frame but it looks like the ATS/DSE plates are almost identical in positioning. My ARH headers work great but as they said the Stainless work headers would probably fit well too. (assuming your doing an Ls motor)