I know of a completely rebuilt motor from one of the well respected buick builders with factory stage 2 heads and correct edelbrock intake and correct headers, the owner is not a computer guy but will entertain and offer.
My Neighbor had a stage 2 motor out of a 71 Stage 1 that he ran in a old wildcat for years. I just got off the phone with him and he is going to try and get me hooked up with the kid that bought the stage 2. I'll check back later.
I had a worthless broken set. one head even had a rocker arm pedestal broken off, gobs of iron missing and porous everywhere. Parts of the head surface missing and the seats hammered out. Talked to Mike T and he said send them to Indy Head Service and they will look like new and never had any repairs done. (he had a set sent to them for the same thing) I decided to sell them but sent the worst one to Indy for an estimate, and then based my price off of that. They said about five and a half grand. So I gave that info to the buyer and sold them for $1000.00. the buyer said he would have Indy repair them later when he had more funds, so I had Indy ship that one back to him. That was back in about 2002-2003ish and never heard from him again...If you want Richard, I could try and find out about those. Just let me know. Guy