Hi All, Bit of a strange question. I am upgrading a TRB1004J however I've realised that the pickups on the 4 are different from the their TRB1005 which have several upgrade options by Bartolini and EMG. The 1004J pickups are 4.5 inch x 1.5 inch. The only pickup that meets those dimensions is the EMG45, but are designed for a 6 string. I read that as they don't use the traditional pole design that it could be used and not affect the sound. Is this correct? Will it work correctly? Or should I just order Custom Pickups? Thanks!