I recently have been checking out the trailers on bangbus.com. There are two guys there that are very big and could be pumpers. One, the thin hispanic-looking fellow (he might have some african american blood in him also) is positively huge, the other, a younger white guy, is a little smaller but pretty darn big. If you look closer though, color aside, their cocks look very similar — smallish glans, really girthy iin the middle, narrower at the base — very much like a look you’d get from combining pumping with a lot of erect squeezes.
I’m not a subscriber to the site, but maybe for some who is, there might be an email link where these guys might be contacted and asked if they pump or do PE.