I put in the SD Quarter Pound last night in My MIM P and it kicks! Loads of punch and very hot! I also replaced the Bridge with a Baddass II and the whole sound has changed. I have another question for you. Amnother MIM bass I have is the Fender Deluxe P with the P/J configuration. I am thinkingabout putting in the SD Pro Active for P-J (P-Bass® neck/Jazz Bass® bridge). Has anyone had any experience with this???