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i recently purchased a 98 670 out of a formula z. Instead of going with a crank shop mod, i'd rather go big or go home and go with a union bay 740, however i hear they have split and become fastrax any advice on who to talk too, or does anybody on here have info on possible mods for 740s. i have the complete motor carbs and all wiring. I live near sea level, and i would have to run 91 pump gas