Pete,
The 10's look good and should most certainly be on that GTS of yours, but you could consider wheel spacers as a short term measure whilst you save up a few quid, maybe by not visiting the pub as frequently!
Julian
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.