Welcome to Stangnet.
Are you using a tub kit or doing a home version (that's what I did)?
Feedback wise, it's a bit of a pita. But 315's are nice.
Snoop around our '79-'95 subforums, you'll find lots of information there. If you can't find an answer to a specific question just start a new thread there. Lots of guys will chime in with help
Post a picture or two of your mustang for us to see. We're kind of picture whores here

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It's good to have you with us.