Re: SD JB jr neck VS JB jr bridge
I bought a JB Jr. for neck position, and I really hated it. It sounded muddy, dark, completely undefinided, and the pole piece at first string was out of it´s right place, like a strat single coil, on a dead spot.
But when I installed that pickup at bridge position, I really liked the sound. Very nice crunch, good amount of gain, bass medium and high frequencies.
The neck JB Jr. is a good bridge pickup.
I suggest that you try to install it at bridge, and see what happens. May be you like it, if not, sell it.