Lee, route was fine but the traffic was diabolical, we had to take 2 detours from route, first detour after leaving Dunster we took a B road to avoid traffic which was great and we'll have to remember that road for the next one, unfortunately we were so engrossed in the drive that nobody got any film or photo's of it but it was nice and twisty and FAST! Second detour was at the end, we missed off/changed the last bit of the route, instead we backtracked up the A30 to the M5, up a few junctions and off again on the A30 East to the A303, all along the A303 to the A360 and then down into Salisbury at about 8.00pm and stopped at a Brewersfaire (The Bishopsdown) for a meal before going our separate ways home, we walked in our front door at 10.30pm after first leaving it at 07.45am that morning.
We saw 6 other Supra's on route including MrSupra^^^^^^.
I did the whole of that route on approx 1 tank of gas. I think the TT boy's faired a little worse.
I'll edit this post in a bit to add some photo's.