Tim:
The dash layout you have is the same as the Ken Miles car, csx2431. Here's a link:
http://shelbyamericancollection.org/.../csx2431.shtml
And here's a link to a pic that a CC member took of the dash in the car:
http://www.clubcobra.com/photopost/s...g.php/size/big
I know this info b/c I bought the same dash from David during the sale and asked him from what car this layout came from. One of the books I have indicates that Ken had a preference for Jeager instruments and the larg 5" tach in the car was a Jeager, but to me, the photo appears to have a Smiths tach in it. Nisonger is currently reproducing a 5" tach that looks period correct but it's spendy at $450. Plus, I'm not sure that you could fit a 5" tach in the present 3 3/8" tach location:
http://www.nisonger.com/whats-new.htm
- Allen.