I certainly recommend Bareknuckle jazz pickups .. not sure they’ll give you a ‘fat’ sound but they are in my top 3 jazz pups & I’ve tried a fair few (Dimarzio/Fender/Seymour Duncan/Wizard which I really liked but not sure newer ones are the same) .. other top 2 are Nordstrand Big Singles & current ones that replaced my Bareknuckles which are Areo .. if you can get a good deal on them then do it .. or I might part with my spare set as I’m breaking current bass they are in ..