I have always Been a Go guy for the most part. If you look at the GTS registry you will only find a total of around 45 M Code Darts in it. This being said most of the cars in there are old Race cars and very few are original. Most will not have the manifolds on the old race cars as thats not what people wanted. I own 2 69 M Code Dart and I have a picture of the one with a July 69 date on the picture from the original owner where he had just installed a Hemi when the car was only 1 month old. The other car is a numbers matching that I am one of those people doing an OEM restoration with as many NOS or original parts as possible. Some cars need to be preserved as delivered for the history of the cars. Yes I do have a set manifolds that I managed to buy for $1700.00 and was very thank full to the gentleman that sold them to me. Now for the price this gentleman is asking seems a little ambitious but as stated he can ask what ever he wants for them since they belong to him. As mentioned "rlcbit" is a hugh collector of Big Block Darts and he is the person I refereed to earlier that wants $10K for a set. These sellers are all fishing and want to get as much as possible for them knowing how hard they are to find.
