I'd like to add that, as someone explained, the more hollow your guitar is, the more vibrations it dampens, and the more in dampens vibrations the less highs it'll have...
again, It's pretty easy to offset that simply with different pickups... with very bright sounding pickups, it might sound just like any Les Paul... So it's not the only thing that can change sound...
Also remember that the more wood you remove the more feedback you're likely to have after...
Anyways, good luck!