billet accessories direct, bonspeed, deviouis, and other companies will custom drill any lug pattern you want, but you may have to search through them some to find a "tunerish" one that suits you. As stated, toyota rear end and front hubs would be the way to go, because there are tons of tuner wheels in the 5 x 4.5" pattern.
Also, all the stock fullsize GM truck and SUV wheels will fit if you have the centerbore drilled out to the 'Max size. Escalade wheels have always been my favorite on 6 lug minis that opt for anything smaller than 20 inches.