Does re-tipping a cartridge change specs?

Chakster - good point.  New needle and new cantilever. 

Re-tipping completely ruins the original sound. Why would anyone even think to do that? How about just buying a new cartridge? 

Will that change the original specs such as internal ohms, loading range, etc?

No, the electrical characteristics of the cartridge will not change.  But it is probable that VTA, VTF will change, and the resulting sound will certainly be different than the original.  This is not necessarily a bad thing.  But IMO it won't be better if you selected a specific cartridge for a specific sound (which most of us do).