whats the difference in the FMF power core and power core 2?

i think i have an original power core the end cone is different. it does not have the bullet lookin end cap that the power core 2 has. it also just says power core on the decal not power core 2. i was wondering if there was really any difference in them
 
they are the same other than looks
powercore:
fmfpowercore.jpg


Powercore2:
JCM-024037.jpg
 
nah that would be a turbinecore if it was spark arrested. from ripping one of these apart to repack i can say the cone endcap is the only difference. actually it has the downturned cap on the normal powercore inside the powercore 2