Questions

Exhaust

If an antique vehicle was made without a catalytic converter, based on Arkansas law(cause i cant find the law) would puting a new engine in make me need to put a cat in aswell?

Legal Exhaust

Ok, im building my grandpa's 59 apache 3200 which came with a 235 straight 6, and no cat in the exhaust, if i get a newer engine, get rid of the elctronics and replace it with a carb kit, will it s...