273 or NOT 273?

A 273 definitely a huge step up in performance potential then a /6, most built NA /6 probably don't even make the power of a stock Commando, A well ported /6 head flows like a port on a stock 273 head but a 273 has two more sets of ports nevermind porting and or other sbm heads available plus all the other performance sbm parts available. They maybe somewhat close in displacement but miles apart in potential. But /6 is a kewl little engine glad people hop them up :)