Out of curiosity (because it doesn't really change the answer), do you have a Custom 24 (CU24) or a CE24? Both get mis-labeled "C24".
Anyway, if you want a particular sound and you're not getting it from the pups installed, then swap them! It is easy enough to reverse.
As others asked, what pups are in there now, and what style of music do you prefer to play? I would guess you have HFS/VB, but could be something else...I guess if you have a late-80s CE24, you probably have "Vintage" pickups.
IMHO: There aren't many selections for your tastes in the PRS Store (the Dragon IIs and \m/ pickups are probably still too ice-picky), maybe the 59/09s? Or go with something third-party, lots of PAF-style pups out there...