Clamps
I have not used them on ATRs but I have the RG Rays and they are excellent pieces. Im currently using them on the TA knockoffs and they seal the crossover perfectly. Dont waste ur time going to RG ray, I went their in person and tried to buy a few clamps. They told me I would have to buy a minimum of 1,000. at 4-5 bucks a piece. If the ones on the site are RG ray then buy them. If ur really hurtin for them come get mine until ur new ones come in. My car is still apart, and Im waiting on an intercooler deal to go thru.