Same PUP's as in my EX-5 and Fred & Weirdy are spot on with their description as to which wires to use.
Yes, they are rather chunky units that don't seem to want to sit down in the PUP cavities but you should also check how far under the strings they might sit as the lower you go you also incur a drop in output, which is something these PUP's already lack. From memory I may have tossed the springs and used some 3-4mm high density foam underneath but that is all about to change shortly when my custom hand wired John Benson PUP's arrive, hopefully within the next 10 days or so.