I think that is Gary Herrig you are talking about - he did a lot of Corvette C4 seats for people... I may have bought one of the last sets he made.
He may be out of the business as of about 3 years ago.
Would one of our resourceful vendors sell those interior panels premade? Seems like lots of people have the same problem you describe...
Good luck - let us know what you find out!
Rocky
PS. JFB had his done by a local dude on the East Coast, and I think they came out great... Scroll down a little..
Interior Discussion
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.