magnum engine swap

I have a 67 barracuda that I have restored and I am using a 74 dart k frame with the spool type motor mounts and a 97 magnum 360 engine. the problem I have is I am trying to install 67 to 76 hooker headers and it appears they wont fit especially on the passenger side due to a large boss for the magnum truck motor mounts. has anyone ran in to this before and is there a fix or different headers? thanks!