I have freshly overhauled original piper 0-320 air-box just received back from Rubbert aircraft. I had 2 of these rebuilt, I figured someone may need one, I paid 600.00 each plus shipping. This has a new flapper blade, shaft, bushings, end plates, bead blasted and repainted. This looks and function’s probably better than new. I have a log book entry from Randy Rubbert, stating what was done and that it was a certified repair back to airworthy conditions. Any questions or if you would like pictures I can email or text them to you. I will ship this too you including freight for 650.00 to the lower 48.