Re: date of manufacture
If you go to: GregorBoats.com, you can send an e-mail including the hull number and they will tell what year and make your Gregor is. For about $20 or less, they will send an owners brochure, but they had a fire a few years ago and they have to photo copy one for you. Took mine about 2 weeks to get. (They are in Fresno, Ca.)
Hope this helps.