I have an old Hamer Slammer guitar which has P90's and a "Tune O Matic" type bridge. In my opinion, one of the best necks I have ever played, similar to a '50's Les Paul. Anyways, I want to replace the P90's with a humbucker in the bridge position and a single coil in the neck, and to make matters more difficult for myself, replace the bridge with a tremolo unit. I need any help anyone can spare in regards to "plugging" the existing routes and holes as well as is all this really possible? Much appreciated in advance. Rock on everyone!