Difference in Manual v. Auto Prochambers and h-pipes?

[silverlx5.0]

I am going with Mac longtube headers and a Prochamber from Mac but the prochamber I believe was used on an Auto and am wondering if it will fit in my 5-speed? I'm not really sure whta the diference is between auto and manual h-pipe's when going with longtube headers.

 

[NOSNotch]

Maybe someone with MACs can clear this up for sure but I think with the MAC headers the auto ones are kinda bent out wider to accomodate the AOD bell and the 5spd ones hug the block a little better. A few of my buddys are runnin MAC headers and have run into problems with different H pipes, i would check a MAC product listing or somethin and see if they list different prochambers for stick and auto.