!978 kz650b Tachometer ratio?

Hello this may be posted somewhere else already, i just cant find it. Im trying to get a new aftermarket tach for my 1978 kz650b. I just dont know if mine is the 1:5 ratio? ive seen some at oldbikebarn that might work, also- does anyone have one they would recommend? thank you

Tach ratio is 1:5, I just put aftermarket on my 77 650b1. If you pull the speedo out of the mount the ratio is stamped on the back of the unit. I'm running the 2.25" white faced gauges from www.mikesxs.net/mikesxs-accessories.php?category_id=8.5 . I've got the $39 per gauges set up on my bike and love them. The speedo from mikes is a perfect match too.

Hey they are nice i am looking for white too! i like the key in the light, i mmight have to steal that idea. been looking for a new spot for it, but dont really want it on a frame rail.thanks a ton.