Modify current rules in order to allow the use of kit-based bodies from the same era/class (Group C – IMSA). Those cars would follow all the rules that do not apply to body model.
Modify the rules in order to use any type of screws, o-rings, braid.
Change the rules in order to allow the modification of wood guides in order to use the braid designed for the stock guide (drill 2 holes on the wood guide to accept screws)