Excellent info guys-I had a set of NT01 road race tires on my last Cobra kit which I only used on the street and they were excellent aside from the assault on my wheel wells
The new car Jay is building has some nice suspension upgrades along with spherical bushings, solid diff/sub mounts. Tires are NT555R on rear/555 on front, not a good as the NT01 but I'll give them a go and see what happens.
Car will be ready soon so I'll post some pics/video-could make for a good laugh at my expense!!!