Will I have a problem with BBK Long Tube Headers and my auto trans....I have aquired a long tube H-pipe so i figure mine as well get the long tube headers to go with it, but I have heard of some having trouble with the auto.
From what I understand, no personal experience here, MACs quality has improved. That said there is one thing I don't like about their headers and that is the individual mounting flanges instead of one mounting flange that all of the primary tubes connect to. On some of the headers it can be a real pita to put the headers back on if you have to take them off. I have no experience with MAC headers but I have installed the same style headers, individual flanges, and had to pry primary tubes in order to get the bolt holes to line up.
I also believe that Hooker makes a header that will clear the bellhousing but they do not line up well with the humps in the crossmember and there might be some cutting involved to make them work.
These are the main reasons I never went with LTs on my 93 even though I really would like to have.
MAC is going through some shakeups right now and quality is improving dramatically and the flange issue I believe is being taken care of. I was using their exhaust back in the late 80's early 90's. They are one of the original suppliers to this mustang craze. let em shake it out.