Way different rout size's needed - HB's are a lot wider top to bottom than a P90 - look into Gibson P94's, Alnico P90's in a HB size shape, they will fit where the McCarty HB's came out. There are other HB sized P90's, Gibson, who invented the P90, does a very good job with a non-traditional sized P90 with the P94. I put a set in an Ibanez AM50, they sounded great. I can only plead temporary insanity for having sold that guitar.