There were quite a few old 4 bangers there Swiss, but they never stood out as much to me, as they were a bit before my time - sorry.
There was a nice looking red Triumph Matisse that was fast and did well. Also noticed a sweet looking KX440 with a big 4stroke engine shoe horned in, did not know you were allowed to do that, and was a front runner in the EVO big bore class.
I do have a program here of the days racing which can be uploaded, but I think Freakshow might be doing this. If he doesnt, then I can if requested.
Anyway heres a few more pics.
red Matisse
This pic is not mine, or from the Nats, but this is the actual bike (KX440 with 4stroke engine). Sweet.