3.40 rear gear, 33" tall tires and a gear vendors OD = 15-1700 RPM cruising at 65-75MPH.

Most driving is between 45-65 MPH for 75% of the drive, go drive it on a hot day at 60 MPH and see what RPM it seems happiest with.

TT Predator headed 572 7 Second Street Car.
Fastest Mopar Drag Week 2015
Fastest Mopar & Dodge Drag Week 2017
Pro Street Power Adder Champion Drag Week 2017