I'm thinking of throwing a JB in the bridge and Jazz in the neck on my Epi lp custom (seymour's fav combo). Honestly, I'm dissapointed at how my Epi sounds and I am wondering how drastic the change in sound and tone would be once the stock pickups have been replaced by those duncans. I'm playing through a Line 6 spider II 30 amp. Dont tell me to buy a better amp, cuzthe spider is a good practice amp and I cannot buy a better amp with the $250 canadian I am willing to spend on the pickups.