finally Stopped oil leak

1973 duster 408,pulled pan twice to replace oil pan gasket,with headers,with engine in the car,what a nightmare,if you ever did it,you know what i went through.finally pulled engine,replaced rear seal with the 2 piece orange one.also used the 1 piece oil pan gasket,for a magnum,and cut the front off and used the la front seal.it worked awsome,not a drip anywhere.i have fought this for quite a while now.im so glad it is finally leak free.never again will i try to change a oil pan gasket,while engine is still in the car,at least,not with headers