The 1990 mustang gt has flowmasters and the air silencer removed. New walboro 190 and sending unit on the way, recent tune up. I’m familiar with some auto trans but have not worked on an aod yet. What is the best shift kit ? I like firm shifts. Slamming on part throttle While putting through town isn’t my favorite but I like very firm wot shifts and firm 1/2 throttle shifts. Car will get an offfroad h or x pipe soon and 4.10s other than that it will be body work .

New to the forum !