Just wondering, since my recently acquired McCarty has Fralin HBSP90's instead of the original McCarty pickups. They sound great but at some point I might like to experiment with a set of humbuckers, since I've got a modded guitar already and the push/pull is still there. I've seen a used set of 57/08's for $300 on Reverb and that might be the most logical thing to do, but Seymour Duncan has a lot of sets that sell new for less than that new. Maybe the obvious thing would be to ask Seymour Duncan himself. I've seen McCarty's for sale with SD's where the seller claims it was a big improvement. Any suggestions or thoughts?