Race Cars For Sale where to look

I've been looking for a basic duster roller. I haven't had much luck finding one. Everything seems to be really nice (expensive) or to much of a street car. What I would like to find is a lite weight duster ladder bar car roller. I have a 500ish HP 440 I would like to use to run some local races. I'm pretty new to Facebook but haven't had much luck there. I've been checking on here and racing junk also. Any suggestions?