Free, I would make it work.
Ditto !
Especially as you have access to more of the same material, it's a no-brainer !
I don't know the detail changes but the cockpit was enlarged for the TC, it's mentioned in several period road tests. Apart from the seat angle (which might not make a big difference to the carpets ?) they enlarged the footwells to give a bit more room. As those areas are well out of sight you should be able to sort something out with extra material.
A quick look at the parts manuals for the S2/TC shows only minor differences - footwells and the treatment at the rear of the central tunnel. I'd reckon if the carpets were free it's worth a shot !
Brian