I found some info in old Ride mags, can't scan anything in as My printer/scanner is foobared. Seems in the mid 90's they had a twin t/t Haro Master copy then as follows : "New for '97 the pulse WF200 SP full cromo, 6mm dropouts o/s d/t 50.8mm". This frame is a Fishbone Big Ass frame with different stickers if that helps.