[Chris1529]

Do you know anyone that has a set of 26" slicks you could borrow to try? That would go a long way to show you how much a gear change would help your car.

If you spend the money for a stocker cam along with valve springs and good lifters, your RPM range is only going to go higher. Your 3:90 gear will become even more of a problem.

A fast stocker 5.0 is going to run 7000+ rpm. You need to gear the car according.