#1
id like to throw a humbucker into my strat style guitar. the body is chambered and made out of red cedar. do you think it would be a good idea to get a pro to carve out a space for a humbucker or just throw a hot rail in there or something similar? i have "boutique" pickups in her now so I'm not sure if this is a good idea at all.

Also i have a button on my guitar that turns the single coils from passive to active pickups. Would i be able to hook that up with a humbucker or heavy single coil? or is that system probably designed for the handmade pickups.

Soooooo humbucker, stacked single coil, or another guitar? haha
#2
Stacked single would probably be the easiest, assuming the guitar is routed for SSS. If I read your post correctly, it sounds like that "passive/active button" is proprietary to that specific set of, apparently hand-made, pickups. If they are hand-made, I don't see why the maker couldn't whip up a custom stacked 'bucker for you as well, allowing you to utilize the "active/passive button" thing.

That's all I got, based on the info you've given.
#3
Take off the pick guard and see if the guitar was routed for a humbucker. If there's an area routed for a humbucker then you only need a new pick guard (or to modify the current pick guard) to add a humbucker. If your guitar doesn't have a pickguard or isn't routed for a humbucker, then you should probably just get a stacked single coil or a new guitar.
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