Possible header problems-440 into A body

Schumacher says in there adds that they have to be modifed for use in a standard four speed and from what I understand they have Accurate exhaust products here in Roseburg Oregon do the mods for them to fit. You may want to give accurate a call and ask them if they can be made to fit the lakewood bellhousing 541-672-2661 or http://www.accurateltd.com/frontpage.htm. The owners name is Tom you may want to ask for him and see what he can tell you. Good Luck Justin