Hard size to find these days, fuzzbox.
Seems like you will need to put a rear together I would have to say to use a odyssey v2 cassette(albes.com) I think that is 3/8 axle or even the odyssey race cassette 3/8.(same) Sun rhynolite xl or a sun BFR and 14 g spokes on 3 lace cross. Which should run at least 140.00 just for a rear wheel.
or you can buy a sun superstock pro for 135.00 from danscomp. It comes with the rhynolites, dt swiss spokes, brass nipples and sealed dual drive hubs for 135.00 for front and rear. That I s what I'd buy.