Just dust off the chassis rule specs from the mid-nineties -- mail to any interested parties and tell them they have to be able to supply rollers for x-amount of dollars if they want to partake.
Done!
Next problem?
P.S. Just don't let them use that fin\fence that ran down the centre-line of the engine cover from the roll hoop towards the rear spoiler. That was UUHHGGLLYY!! I couldn't believe any top class series would allow such an abomination. Oh well, I guess they didn't know any better back then... way back then... before Jag had grey hairs. ;)