Can I locate a BRIDGE P/U in the NECK position and so forth??[/b]

As long as it fits in the route then yes you can. A single coil is the same size the difference may be the output and tonal qualities. Depending on what you are exchanging it may sound like crap or it may be a happy accident. There are no rules.

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"You can never have too many guitars."

I have done this a few times to obtain a certain result. For instance, I put a DiMarzio Super Distortion in the neck positions on a Deluxe Tele to get a really fat, P-90 sound. It worked really well. I just had to have a hot pickup in the back-end to keep up with the output! Most calibrated bridge pickups are generally hotting in their k output to give a little extra bite.

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Xhefri's Guitars
www.xhefriguitars.com

I had all bridge pups on one mine. Makes for a very hot guit.

Craig