Dave, i'm just curious do you have automotive type stereo's (pics would be helpful to us) in your bedroom and living room? If so, any auto installation shop could set you up with the proper faceplate / conversion kit for whatever stereo you want to install. In regards to running "larger speaker wire" it sounds like you are upgrading to a higher guage wire? If that is the case maybe you can use the old wire to pull the new wire into place?