Converter technology is so far advanced for even 15 or so years ago its crazy.
The first converter I ever bought was a B&M Super Holeshot for a street/strip 318. While it worked well for the era, it would be considered scrap today.
I believe Drag Week and such events had a HUGE affect on the development of converter technology.
The 8 inch PTC we used on my buddy’s chevy PU was a Drag Week converter. And it flat works.