I wouldn't know what's involved with it all, but is it possible to have a whammy-bar on a string-through set up? Thanks.
Yes, you can: http://www.stewmac.com/shop/Bridges,_tailpieces/Electric_guitar_tremolos/Les_Trem_Stop-Tailpiece_Tremolos.html just use the slots as guides for your strings instead of hooks.
Nevermind, guys. I found that I can have the guitar I wish to be made with a different bridge than the string-through.