Speedo and Tach on 74 cb750

[Honda574]

Hey everyone, im new to this cb 750 game and i just bought a 74 k model to fix up myself as a little project. i am in need of a new speedometer and tachometer setup on the bike and was wondering if a gauge setup from an early eighties model would work on my 74? the reason i ask is i found one on ebay in working order fairly cheap. Thanks and heres some pics of my new purchase.

 

[losttravlyr]

the speedo would probably work,not sure about the tach. you probably would have to make new mounting brackets to. you can also get miniature speedos for chops that have a clamp that mounts to the bars for around 40 new.