That is a very aggressive conversion you just did. I don't think so. It took until 1975 for an All Timer of all timers to break 3:50 on the fastest of track types to date. And the shoe advantage people are using for the mile, is way over the top.
Ryun ran on some great cinder tracks, while not nearly the mondo evolution of today? Those tracks were fast. The first evolution of "artificial tracks" If you ever ran on ones in early 70's in HS, were actually quite hard, and in cold spring meets, were very hard..lol.