Welcome to the Ford Mustang forum built for owners of the Mustang GT350, BOSS 302, GT500, and all other S550, S197, SN95, Fox Body and older Mustangs set up for open track days, road racing, and/or autocross. Join our forum, interact with others, share your build, and help us strengthen this community!
Good place to source wheels is with Apexwheels.com or Late Model Restoration ( both site sponsors ) and either way go for a squared set up. Tires are an interesting subject, though they are the best mod to go fast, yet the choices can depend some on whether your main focus is track or autocross events.
Welcome to TMO, it is a super helpful site and don't ever be concerned about asking questions.