Private investigators?

[JRC99]

Apologies if this isn't the right place for this, but, Dad will be turning 55 in May. I think it'd be really cool to surprise him and reconnect him with the '73 Firebird he had when I was born. Problem is, we don't know where it ended up. I've posted it to Lost Muscle Cars, posted on Performance Years, etc. I used a PI to try and find a Bronco he had years ago (trail was cold, truck had been scrapped) but I cannot for the life of me remember who it was. So, would anyone (especially in Michigan) happen to know of a good PI who could maybe help me out? Preferably one who is a car nut like us. I know MI lets you request a search of your own vehicle history, but if I remember right they're real finicky about letting you do it (getting the VIN to that Bronco was a royal PITA and took me the better part of three years). I put more faith in the members of this board than I would just about anywhere else, so I thought I'd ask.

Picture of the 'Bird for your time.