I'm restoring a '73 Chevelle SS 454 4spd and
cannot find a source for the control arm "flaps". I have a decent original for a pattern. Anyone know where to get that rubberized fabric GM used for those flaps?

I'm pretty sure Ground Up, the site's sponsor,has them. If not, try Year One.

I bought some from Original Parts Group for a '72 but since I had none to begin w/, I can't tell you if they are perfect replacements.