OK- the guy who did the PPI was just another forum member (r3vlimited.com, which is an E30 specific format). He's going to put me in touch with him, and then if that sounds good I am going to pay for a PPI at a shop I found in NW Detroit called Nikolas Motorsport. They have a website that at
http://www.nikolasmotorsport.com/ . They seem like the right kind of place to get this done. THEN- assuming this goes well, I would need to figure out how to get the car down here.