I understand about being tapped out. I found that with a simple mod I could get Danos in the humbucker rout. I had to make pickup covers though, and that was a ton of work.

Another thing you might consider is to use something like a DiMarzio X2N or X2N7. They are not, strictly speaking, a bass pickup, but they've been uses in basses. The "7" is a bit wider for 7 string guitars and might work well with a bass if it will fit in the rout...

Lots of cheaper bar humbuckers that should work fine for bass as long as they are wide enough.

Sent from my ONEPLUS A3000 using Tapatalk