mac long tubes

please help me . i have a pair of mac ceramic coated long tubes, i would like to have ur opinion on 2 things. first i have an auto trans would this create a problem when installing the headers. second would i need o2 extensions.has anyone installed mac long tubes i would like to know ur opinion.


05 stang premium
mods: 355 gears, k&n cai, sct tune, flowmaster, x pipe