Offshoreonly.com - Please Help! Buying a Classic DONZI GT-21

I don't know the first thing about classic donzi's, but I found a 1969 Donzi that is just listed as a 21'. Based on the looks it could be either a GT-21 which I believe to be true or a Hornet III, which I dont think was availble in 69' only reason I am thinking hornet is because of the acrylic windscreen that the boat has.

The only number the boat has HIN# 216, that is even on the title...

Sooo, I dont know if this is worth messing with or not. It doesn't have the original Holman Moody motor, in fact it has a summit create motor of some sort and have a Volvo Penta outdrive...

Any help would be greatly appreciated, the sooner the better.

I tried signing up for donzi.net and they wont give me access to the entire site...