Exhaust lap clamps

Have a 2.5" pipe coming off my headers. A friend has some 3" race mufflers, that he will give me. I'm trying to find a lap clamp that will clamp these together. Looking at Jeggs, Summit, but so far no luck. I'd really like to do this without having the use a transition pipe. As space is tight.Thanks

Looks like these guys sell any size transition clamps you might need.
http://www.alibaba.com/product-detail/Performed-Stainless-Steel-Exhaust-Band-Clamp_486453354.html

Treblig