Welcome to the new and improved Proflex / K2 Tech Forum!
757 downloaded from Girvin.com and that states 68 x 110 and has also got all of the other details. I think this was the same frame as an 856 wasn't it?
have met many of the contributors on this site in person incl. Kiwi while travelling in the land of the long white cloud, so I think they will vouch that I don't bite!