Regarding the GM issue, if the ITAC were to get a letter asking for the removal of the exception, I think it would be seen as a reasonable request, and we'd discuss the merits. IF we supported the removal, we'd add a "sunset clause" of a year or two for the Calais nation to source the parts.

FWIW, 1st gen RX-7s face a similar issue. Engine parts are NLA. There is a plating system available aftermarket, but the finished plating differs from stock in material, but not performance, and is therefor illegal.