Just so you know, the "M" only comes off on the 8.5 and up centercaps...
YEAH found the rx8 caps!!!
posting these pics to help, and mebbe get more info
I bought a set of RX8 wheels, dunno what year all 4 caps the same. NO pins
Pulled the stockers when I had the rx8 mounted and all that
found three caps WITH pins and one oddball, the oddball is actually a sheetmetal stamping over a plastic base
I have a 07 GT
from l to r: rx8 back, ms3 back, side angle, oddballcap back, ms3 CAP APART
so, clearly they do come apart, 07 and up.
some caveats, first, there is a depression that the emblem sits down in in the cap
pushing the pins out may work, I used the corner of a 8 inch chef knife and got under the emblem and worked my way around. snaps back together no sweat
the depression may have a slight effect on the new emblem. if its a decal, then the depression will show. if its a stiff plastic badgethe adhesive will only have the periphery to adher to