i've had my FA5 on a long stretch before and had it stop at ~130. weird about it, as previously stated, is that if you shift out of 5th into 6th lower it will stop at 125-127, but if you take fifth into redline and then shift it will let you go further. the 5-6 shift actually drops you below the vtec kickover, and i never felt it kick back in, so i don't know if it doesn't let you.
and i apologize, but most civics run out of steam before they run out of gear.
my friend has an S13 SR20DET swap and he tops out at 120, but he gets there MUCH faster than my FA5 does. on our local touge there is a "back strait" that is around 3/4 mile long that leads into a sharp 90 degree corner. he hits his speed limiter in under 1/2 mile, where as i hit redline in 5th (~123mph) right as i'm entering the braking zone at the end of the stretch (making this tranmission the most perfect gearing for this course, ever!). i've gotten consistent enough with it that i time my braking with my shift light. when it goes solid red BRAKE!!!!! and i tell you, there's nothing like trail-braking into a 90 degree corner at 70mph.