just got myself one of those Manitou Kingpins for $100. Not high quality but for $100 bucks, who cares! anyway, I got as a part for a bike I plan on building. I already have a Kona Stuff, so I was thinking of a dual suspension. I don't wan't to spend alot of money on the frame. I'm probably gonna go used. I've seen used norco 4x4's for a decent price, would the Kingpins be okay on that frame? Want the bike for light to moderate freeriding. not a hardtail, I like the morphine but i want dual suspenion. I may also look into a used stinky. I want something size small. (i'm 5'6", 120 lbs). Any suggestions on frames to look for that are used and around $600 u.s. range? also would that 4x4 work?