So let me tell you the story of how I got these pups in this awesome guitar.
If you ever want to put Bare Knuckle blackhawks in a JP7, you will have to route the pickup cavity if you want to be able to move the pickup up and down. Yes you can sand where the feet touch in the cavity, but it will be a muddy mess. I did have these blackhawks in my Sterling JP70, which has a deep cavity, which means no routing.
The first tech I brought it to had no experience with wood and wasnt comfortable touching it. So in a round about way he had it for a month with no work done.
The second tech I bought it to is an actual Luther so he was able to route the cavity. He said it was some work, but he did an excellent job. I dont have any scratches on the body. I have a little chip on the inside of the pickup cavity close to the top, but I put black finger nail polish on it so help seal it.
Overall even though I didnt have my guitar for almost 2 months, im happy with the blackhawks. They sound really awesome.
I have heard nothing but great things about those PUP's, unfortunately I have never had the chance to actually play a guitar with them installed. Looks great though man.