Just my two cents worth here....
Hi ftrayd5555,
I would strongly suggest that you send an email Pete or Jerry @ www.fordchip.com and find out from them when and where there going to be at to get a dyno-tune done correctly. There well worth the money and the time to get them to do the dyno-tune on your Mustang.
Other wise, I would suggest getting a bench chip from Chris Johnson from www.jmschip.com, Chris is really good with a bench tune and he uses Autologic chips. but it won't be a dyno-tuned chip.
Anyways, Good luck to you!
C U L8R,
Kyle
NMRA M/M9