Fobra

c-4 or c-6 would be the upgrade for an auto, I personally think a 6 spd is not a good thing for several reasons, a 5 spd is ideal, you can get custom gears put into to get wutever rations your wanting, you want (or at least I would want) 4 race gears and 1 super over drive gear for mph, but it depends on your goals... if your wanting to get like a 150+ top end then a 6 spd is kinda needed for drivabilties sake, as far as a 6 spd auto goes, I dunno

SOHCtimes2

Thanks for the replies guys.

And yes I got another Stang...about 2.5weeks ago. Picked it up all stock, for 6k. Paid cash.