Why are you wanting to convert to mass air? There is a lot you can do and still and still run sd. There is also a lot of misinformation on the limits of sd. Changing to mass air is a nice chunk of money that could go to other mods that will make more power.
I am not saying to not go with mass air, I just don't want to see you waste the money because of bad info you might have been given.
If you do decide to go mass air, like others said, contact Ed.
'94 Lightning 383ci w/Vortech S-Trim +too much to fit in the sig.