I have a work in progress customized 70's reissue jazz bass (the japan model from the mid 90's I think). I have swapped out the pickups to bartolini's and had a cavity routed in the back for a bartolini 5-band active eq and battery cavity. I am pretty happy with it right now, but I am thinking of taking it one step further and replacing the bridge pickup with a bartolini MM style pickup. I know lakland does this with great success, but I'm wondering if it will be successful on my bass. First, will it fit with the pickguard still on it? Also, is there an special wiring for this PU that would be different then just wiring the J-PU that I have, or would it be a direct electrical swap? Thanks for any help.