On a tangent... Looking at Appendix B in the TCM regs, I see Escorts and 510s only have "4 cylinder up to 2000cc" listed as the specified engine. Does that mean they can run anything from the manufacturer which fits those criteria? Imagine if a TA22 could be homologated with the works style flares and aero, with a BEAMS, wilwoods under 9" watanabes.... Or a KE15 with a 20v, or KE25 with the 3S... Would make the sub 2l category interesting and still represent the era well.