TTi exhaust kit, or haul it to the muffler shop?

I need to put a new system on my car too but TTI will not work. I have fenderwell headers. I can't decide between getting Summit's 3 inch complete exhaust system and 3 inch H pipe (with TTI's 3 inch tips) and having just the head pipes fabricated or letting a shop fab the whole system. It is not my driver and the engine is built enough that I am going with Dynomax Ultraflo race mufflers because I want breathing and don't care how loud it is. I am going to get some prices from shops and then decide.