I just saw one at the local swap meet this past Saturday, new in the box $15. I didn't think twice about it because those things were junk outta the box anyway. Go with an AFB or a new Edelbrock, don't waste time on warped plastic.
well the body isint really a plastic it is made more with paper/cotton blend impregnated with a synthetic plastic resin and I dont think they can warp (or well let me just say iv never seen them warp) but they do become brittle with time.