I would probably irritate folks if it was up to me.
If I had to draw a line in the asphalt it would be World War II. Anything pre WWII would be a Street Rod, post WWII to would be a Custom.
If I mentioned a 'Pre-War Coupe' to someone my age they would know I was talking about WWII. I've never heard a '46 + Ford referred to as a 'Post-War Coupe' or Sedan. I also can't seem to think of any Post-War Roadsters (from Ford) that I've seen, with the exception of '55 - '57 'Birds or Lincoln Mark II. If you hotrodded one of those early 'Birds would you still call it a Street Rod?
If I put my '68 Falcon into street legal trim I sure as hell wouldn't call it a Street Rod.
Told you I'd probably irritate people with my opinion.
