I love a woofy old school bass tone but don't really want to invest in a bass that only does that tone. I want to add a pickup right at the end of my J bass' neck, but I don't want to cut the pickguard. Would it work to route out a cavity deep enough to hide a pickup like this underneath the pickguard? I know that the sound wouldn't neccessarily be in balance and the impedances of the pickups wouldn't match. The wiring isn't what I'm wondering about - more the tone and idea.