Honestly - there are not any local shops that I know of that do a reflash of the PCM - mostly all do some sort of chip (autologic, superchips, diablo, etc.) - and many don't even do the tuning themselves. There are some tuners out there that do it for Mustangs but I'm not sure of what they can do for an escort.

Best place I can think of for what you're looking for would be www.fordchips.com

I know they are going to be here in August doing a local dyno tune from what I've been told. I would email them if you are serious about getting this done - I'm pretty sure they could accomodate your request.