I'd like to fatten up my otherwise fine sounding bass to make it perfect. How feasible/insane would it be to replace the 2 j pups on a b/o 5 thumb with a $$ pup & have it routed for another slanted j in a neck-ish position a la the dirty blond 5? Or even just get an extra j pup in p position n have the 2 rear pups wired as parallel? Lunacy? Advice/ideas/abuse please!