No spacer. What I think you see is the integrated mounting bolt that Steve pointed out in his photo. Then there are two adjustable stop bolts to adjust position of the throttle pedal for idle and for wide-open throttle. Here's a better perspective view photo from a long time ago and a photo on the bench. The bracket always looked to me like something I could fabricate with my eyes closed...
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.