sounds like your referencing the redhead manual. funny part about those manuals is they lumped the information for the viper in with it but there was a supplement manual to go along with the redhead manual for viper specific items.
don is 100% correct on the sizing he gave you. look at the cover of the manual your referencing. most likely its covering mm700, vt 700, sx700, and vx 700. may or may not have the viper supplement. you will need that for your viper.