You're right about the EMC builds that used Procomp BBM heads. Jesse Robinson and his team used them one year (maybe two?) and Randy Malik did the same year, too.

I tried looking for online articles that might show their respective valve trains, but didn't come up w/ anything that I didn't know already, such as the JR entry had T&D rockers. I was hoping to see whether either one had milled the stands off completely, or ???, vs just bolting them down. No such luck...

It occurred to me while typing this that I could dig out the ol' Procomp "Crash Test Dummy" porting R&D head and compare the rocker stand saddle fit w/ my Victors'. scope