I stated earlier that Cowtown had 40+ cars ... how many of those guys "Crossed the Border" from other organizations? A good number of them.

You said yourself that the western races only had 15 full time cars ... in addition to the other USAC and USAC Western regulars ... those races had regulars from POWRi, Badger, AMRA, SSMA, SMRS, BCRA and RMMRA who ran at least one of the races.

These races never would have been that big if the sanctioning groups had their own unique set of rules.