magnums & A bodies exhaust fun(not)

when you compare the LA header openings to the ports on these heads...the LA opening is about 3/4 of an inch longer(top to bottom) than the port opening on these heads,So if you use an LA gasket..that much of the head port(3/4) has nothing to seal against,and the sides of the ports are blocked 1/8 by the header flange cause the head ports are slightly wider...