Welcome the the Bolt.
You should read the first two sticky threads in this section.
Remember that if you want more speed, you will need more of everything to go along with it. First is brakes, then is more torque from the engine. I would say you have something up in the 6:1 rear axle ratio. I daily drove my 46 2-ton with stock everything but front disc brakes and updated electrical system. Could run 60 on the interstate, but more comfortable around 50-55.