6000, 7000 or 8000 rpm tach?

Whilst I agree with your thinking … at this time, I don't see growth coming in the rpm department. I have the following mods coming.
Currently I shift at 5,000 rpm. I'm trying to be nice to the LA 360. I'm probably babying it too much, so this season I will shift it at ~5,500 rpm.

I want to hit 13.999 before moving on to the AVS2 and Air Gap Intake. The car is capable of 13.999 … but I'm trying to and wanting to achieve that on the factory 14" wheels, with skinny 215/60 street radials! :D

Once I hit 13.999, I'll move on with the AVS2 and Air Gap Intake and tune that to perfection with the AFR gauge.

I will be happy with the car at that level, because it is a very clean & original, 1972 Scamp. Combine its looks with an easy to drive, reliable street car that can make 13 second quarter mile runs and I'm pretty happy.