Here is a list of pushrod engine bikes, I'm not sure what the ECTA numbers are, anybody who knows can add those. But my antiquated engine is in there too. Unfortunately without a fairing at this point.
I heard that the ECTA does not measure/seal the motor so we can run in multiple displacement classes,, If Bonneville does not happen and if I can find a sponsor I may come to Loring which I heard is nice.