Ran accross this through my Chevy connections thought I'd post it. I been in contact with the owner (who gave permission to post the pic and a link to his site). He does not know who did the original conversion. There is a great story behind this one. The story and a lot more pics can be found there. I gave hime the link to here and invited him over. Don't see to many airport limos like this.
http://www.doorthysplace.com/
http://www.doorthysplace.com/