Im just curious to know guys, are the measurements you guys giving from axle mounting flange to axle mounting flange? Does my spec sound too long/short?

I know every car is different, i just want to be sure before i cut this thing right. Also, the way I have measure is with the tires as high up in the wheel wells as possible, since i want that a low stance and figured id measure taking into account if the car goes over a bump/suspension travel to be on the safe side.

One other question i have for everyone- it seems that there is a ridge inside the tub which sticks out on the quarter panel side of the tubs (if that makes sense)...did you guys bang that lip away, or are you using after market tubs that eliminated that problem totally?

thanks for the help everyone!