I just finished fixing up this Baldwin / Gibson Les Paul Jr. copy. I shielded the pickup cavity and the electronics cavity with copper tape. I also I installed a new wraparound bridge, which allows for minor intonation adjustments, and a Dream 90 (a humbucker-sized P90). I'm playing through a VoxAC15C1. For about $50 I think the guitar ended up sounding respectable. (Sorry about the lo-fi recording quality of my phone)
(http://imagizer.imageshack.us/v2/150x100q90/c/69/yyh7.jpg) (https://imageshack.com/i/1xyyh7j)
(http://imagizer.imageshack.us/v2/150x100q90/c/849/60l7.jpg) (https://imageshack.com/i/nl60l7j)
And here's the video:
https://www.youtube.com/watch?v=Q30u4rIsTKs
always had a soft spot for gibson lp junior appearance, that look awesome.