They have not. Merging looks nontrivial (not to mention the chances of anyone having the hw in question are not high...)I am sure somebody does, somewhere. OTOH, searching for "DayStar PowerCache" brings up quite a variety of hardware...
I think I have one. I will be able to look in about two weeks, when I'm on that side of the country.
It seems someone is making new clones of various Daystar accelerators, so this would be good to have:
https://68kmla.org/forums/topic/63106-fs-daystar-universal-powercache-p34-clones-3340mhz/ Thanks, John Klos