I did one with mine. In wiring phase at the moment so I don't know the impact yet.
I did all the math calcs for mine. With a LS3, tire height, transmission gearing, etc. I basically ended up with the following numbers:
Drone/Cruise RPM: Inches needed for tube:
1,900 : 25.65"
2,000 : 25.32"
2,100 : 24.11"
2,200 : 23.01"
2,300 : 22.01"