Theoretically, if the small OD portion is outboard, there may be a tiny bit of unsprung-weight advantage, which even pro-racers will not notice. But as mentioned, making a little more large OD exhaust pipe clearance is more important, and that may be either way on some Panteras. Whichever yields clunk-free driving is desirable!
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.