Sort of. PMR 07/08 used a different UL frame from PM5/6/7/DM'x'. PMR9/10 I BELIEVE is the same UL frame as the PM/DM (I no longer have a PMR to verify, and it never occurred to me to do while I still had a PMR). SLG's UL frame are ALL different from the PM/DM line. No idea about the PR/PRR UL frames.sorry. reading comprehension fail. sorry.
as for frames, as far as i was concerned, a UL frame is a UL frame. but then again i only own one pm8 and haven't dealt much with dye products.