I beg you to consider this pickup instead. The EMG HB pickup came standard in early Steinberger basses and is a P bass pickup in a guitar humbucker housing. The only thing you will need to do is cut the pickguard. There is ample room in the Bronco body cavity.
Soundwise you would successfully use this bass anywhere you would use a P bass. I truly feel this would be a significant improvement over an SA pickup or similar. If you are ever in south Georgia, USA hit me up and you can check it out.