AMD not making 72 quarters anymore.

I have had a right side quarter 700-2072 (Swinger or scamp) on backorder since January. I called summit to get a exact shipping date. After about 10 minutes I was told the manufacturer is not making that part anymore. I then called AMD and asked the same question. They were surprised to tell me it is no longer on the manufacture list. After some more calls I ordered 2 70-71 quarters from Summit. They will return the left side 72 quarter I already have. They told me I should have them by Saturday. Good thing I am not trying to build a numbers car (I like the 71 markers better). Lesson is don't start assembly till you have all your parts!