A 1974 Duster - My 2nd one, 41 years later!
As Cal posted, I had to grind on the back of the manifold as well.
IMG_0367 by
Alexl5280, on Flickr
IMG_0368 by
Alexl5280, on Flickr
I also had to shorten two of the ARP manifold bolts. They were just impossible to get in. They hit the runners of the manifold. Cut off about 1/4" and re tooled them and they went in. More pics tomorrow.