Speedo is easy, use a Speedbox from Speed hut to drive your original speedo via GPS or wheel speed sensor. Transformed my old bouncing Speedo into a smooth accurate great gauge that looks authentic. I did a install on facebook if you are interested
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.