I don't know of any near Cape, but if you find one down there, let me know, my brother needs one and he's down there. However, there is one up here by me, his name is Joe Donovan. He's extraordinarily knowledgeable and just a great guy. I will be getting my gto in for tuning as soon as he gets the software for the 2005s, but he already has everything he needs to tune your 2004 (ls1edit). He does full dyno tuning.
I'll also have him putting the cam in my 05 before the tuning. In his shop, he's got a ton of cool, and FAST cars. Everything from vipers to corvettes and Camaros, GTOs. When I asked him about cams, he took me into the shop and started up several cars with different cams so that I could "hear" what my car would sound like with 'em. He also gave me horsepower estimates, as well as telling me everything I wanted to know about the different models. He seems to really know his stuff. He just moved shops, but he's still in the same basic place (within a couple of miles). He's in House Springs, MO, which is a bit south/southwest of St. Louis. It would be about 1 hour from you I guess, just a straight shot up 55, then across MM to House Springs. It may be a bit longer, but not much. His shop's number is 636-375-3151. If you have any other questions about him, ask away. If he asks you who sent you, just tell him "Scott" with the yellow '05 GTO, he should know who I am by now. haha