Wonder how emissions testing is handled in those Tenn counties requiring it? A true '57 vehicle had NO emissions controls or ODB II ports. Doubt any air cooled engine would pass a current year registration (except for maybe Subaru powered with original ECU and catalytic convertor).
We don’t have emissions testing (any more) in Shelby county. But I think I read that replica cars and/custom built cars are not subject to emissions testing. We are doing a SUBy build. So should be good to go regardless.