You'll need to get some new speedo gears...
Here is a link to a page off Team Chevelle that will get you where you need to be.
http://chevelles.com/shop/speedo.html
Tom
- [Chevelle-List] speedo off Ron Lew
- Re: [Chevelle-List] speedo off Herbert Lumpp
- [Chevelle-List] Exhaust Pipe Diameter the . cat
- MICRLASER

