I lived in CA when my car had to go to "the shed" (emissions test facility) every year for emmissions testing. I had to advance the hell out of the ignition to get it to idle below 900 rpm every year and the technicians never recognized a radical ignition system, a big Weber carb or the Tii exhaust header on my stockish looking '76 2002. they would have had to do a NASCAR tear down to discover 10;1 pistons, lightened flywheel, lumpy cam and some port work. It was a very custom motor that I should not have parted with.