Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
You'll need a 172 gearbox. Other ones won't do the job.
Assuming it is a ph1 172, and not a ph2, you need to get a speedo drive box. It is a JC5 089 or a JC5 129 box you need.
If you get a ph2 (with the exception of early phase 2 boxes) box your speedo won't work. So make sure you get the...