Where are you at in Missouri? I supplied the gears and extras when I had my gears in my stang put in. The speedshop charged me $200 to put it in. The total after parts and labor came to about $400. You can get new Fordmotorsport gears from Diversified Marketing Products for $149 ($159 after shipping). JMO but I'd replace the bearings and you'll need shims, too. And you'll need 3 quarts of fluid and a bottle of friction modifier. The rear takes a bit over 2 quarts. I"m in the Springfield area myself.
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1994 Red SVT Lightning #2019
National Lightning Owners Club