Welcome to CSC pointguard,
I tried to search the link,
http://www.classicseacraft.com/SeaCr...eriesfinal.pdf
But it "no workie" maybe Trayder can find it.
Basically 1970-1980, were Potter Built.
81 to about 83 were OK,
try to stay away from the Tracker years of which I do not recall the range.
Good Luck with your search, See ya, Ken
Here are two that are worth watching.
eBay eBay