#1
Is is possible to fit one on a guitar that already has one. eg my DEAN. Just wondering.

Though I might get one installed in my Westley. Aswell as puting blackouts in it.
My Gear

Guitar
DEAN Razorback Shards
Wesley crappy cheap thing

Amps
Cheap Crappy Freedom Practice AMP 15watts
VOX AD50 Valtronix
#2
You will have a lot of empty routing left over from the Floyd. I wouldn't recommend it.

If it's a "crappy cheap thing" as your sig says, then you may as well put some money into modding it. "Crappy cheap" guitars are the best for modding, and it won't be nearly as painful to have someone carve large amounts of wood out of the body.
Heads will roll. Throats will be slit. Blood will flow like springs of water.
#3
yh, theres nothing wrong with the dean, my money will be focused on suping the westley. BTW anyone know how much it would cost to get green LEDs instead of the normal dot inlays installed on the westley.
My Gear

Guitar
DEAN Razorback Shards
Wesley crappy cheap thing

Amps
Cheap Crappy Freedom Practice AMP 15watts
VOX AD50 Valtronix
#4
They make plates that will fill in the empty spaces left by a floyd. I asked this question myself.

Never did come to a conclusion.