Street Demon
I have a Street Demon, but it never made it to the 273 yet. It is definitely not too big. I have run a 750 TQ on 273's without a problem. If you want to run one with the 273 Commando/Charger intake you will need a thin, 3/8 spacer as the fast idle arm will hit the carb pad. I thought it would be a killer combination on a 273. That small carb stuff is for lesser carbs that don't have a secondary air valve.