I think you can find a good used set much cheaper than the repo's. I know there has been a 2806900 on ebay a few times listed at $99 with no hits, the right side HP manifold 2806900 is the most common hp manifold as far as I know as it was used on all hp engines from 67-69 in B and C body cars. If you find a good one give me a buzz I have the 2843992 (68/9 b body left) I will sell ya for $65. I have also seen 70/1 pairs on ebay for around the $200-$250 range