This discussion came up a few times during the track day.
As the days progressed and I was carrying more speed onto the straight I found myself running out of gearing well before the end of the straight and bouncing off the rev limiter.
I knew in theory that, thats where my limit was by doing previous calculations but this was the first time where my cluster was working right and I got to experience it in person quite a few times.
Croc was asking me which rear end I have and I double checked that I have 3.62
My 6th gear is 1:1 direct drive.
Tires are the Toyo R888 225/45/13.
Top speed as calculated is ~126 at ~7300PRM
New tires being Avon 245/50/13 put me into ~136mph as they are a bigger diameter 22.65 vs 20.97
Unrelated to that, but big fan of the first gear going to ~45mph.