Gamiviti roof rack mounts?

[FullyLitLED]

What is the lowest height that these can be set at the center of the 100 series roof? Measured at the middle location from the foot of the mount to the top of the mount. I've seen the photo below from paflytyer and wanted to know the lowest height at which the mounts can be set. Need to finish my rack build by next weekend and would rather buy the gamiviti mount rather than burn lots of time fabbing some in my garage...thanks in advance

 

[rb4638]

 

[rb4638]

My Expo rack is mounted as low as possible at the center, but because the roof arches from front to rear the brackets are taller in the front and rear to compensate

 

[FullyLitLED]

My Expo rack is mounted as low as possible at the center, but because the roof arches from front to rear the brackets are taller in the front and rear to compensate

Thanks for the help! Now I can finish off my rack