Are you talking about adding a pick-up to your guitar?
there are several options available. Barbera, K&K, Fishman.... they make a variety of pickups for CG. I've also seen this attachment for using a mic that I would consider rather than do any cutting or drilling
https://www.google.com/search?q=guitar+ ... 20&bih=916
Amp wise there are many good manufactures of quality amps for acoustic guitars. This in itself is a whole 'nother thing. there are several options starting with combos or separate heads/cabinets. here are some names to look at:
I've played through all but the Schertler amps. My preference was the Acoustic image head with a speaker cabinet. But they were all good quality amps that got the job done.
I'ml sure that many members here have more recommendations and advice.