Group ND Proposal
The rotor housings and end and intermediate plates must be those that were standard for that particular model. The inlet ports in the end and intermediate plates may be modified by the removal of metal, including bridgeporting, but the original O-ring seals must remain unmodified and in their original location.
Justification and Rationale
As there are no precedence for Rotary Engines in Category 5 this may be a difficult requirment to define As a starting point we have followed the Group 2B Production Sports car regs
