Thanks for the responses and offers to assist, much appreciated.They do have their "brick & mortar" info on the site, they're in Largo, FLA. I'll be phoning one of their reps later today for more data on a '75 Eldorado that they've had listed for a while.
Just as an FYI for any interested forum readers out there - this dealer requires a refundable deposit of 10% of the asking price to make the car available for inspection. I do understand and appreciate the reasoning they gave for this requirement, it just doesn't sit well with me. Again, thanks to all.