73 steel rim question.

And no 340 car ever came with wheels that narrow; 5.5s would be the smallest (and that was in 1970, with E70-14s, lol).
But in all fairness, I wouldn't run anything that narrow on the front of a 340 car.It's just way too easy to wipe out when gassing it in a corner.

I run 235s on 7.5s on the front and it is just barely adequate on the street.