One of the critical dimensions is the width of the seat back. If it's too wide, the seat won't recline all the way back and you'll hate them. Also, the narrower the seat, the closer to the center console you can mount it, which means the steering wheel and pedals will be closer to being directly in front of you, as opposed to being offset to the right. If you look at the photo of my interior, below, you'll notice how much room there is to the left of the seat. My seats are the early Recaro's.
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.