[Graham]

The SlotIt DTM's are only 60mm wide but the class width limit is 64mm

It will be safe, then. Well within the 64 max limit. Most touring cars will be less than 60mm. I think you'd need a Group 5 before you got up to 64mm, and, I'm sure they are not allowed!!

It is a good point I will mull over after a check through the list of cars again, actually Group 5 cars were listed as BSCC Touring cars but I have chose to avoid them for this Proxy, and it was probably for that reason that the 64mm width rule was included in the CSRA Saloon Car rules for 1982-1988.