I used the transdapt mount kit, and moroso solid motor mounts, worked fine. for the headers I used the edelbrock F body shorties, it cleared everything, looks like it belonged there.
http://www.racingjunk.com/post/930845/Supercharged-1981-Malibu.html?imageIndex=3
http://www.racingjunk.com/post/930845/Supercharged-1981-Malibu.html?imageIndex=3