My unis fit fine, I have one set in red ( tuneboy ones) and one set of greens ( UNI)
I think there is a slight difference in flow, but not that I can tell ( green to red)
they fit fine, do compress slightly, I didn't want the rubber bottom ones cause I needed the sock filter to stretch over the velocity stacks
I'll take a pic soon that shows the velocity stack, I have my airflow sensor in a seperate filter at the front ziptied to the frame ( small chrome breather from auto store)