I switched from a "full race" shift kit to RMVB. The reverse manual is WAY better on the street. The full race shift kit shifted around 3,200 RPM and would break the rear tires loose in any kind of damp or loose road surface. I have a spool so a fair amount of driving sideways was needed. It was not safe at all. (And the exhaust is LOUD by 3k) not super cool with police around....
I did get use to whacking the throttle, getting it to shift then backing off and cruzing.
With the RMVB I can shift at what ever RPM i want.