By NHRA and IHRA im not aware of any "rules" that your car at any speed should have a wheelie bar. The only rules im aware of is for roll cages and parachutes. But as far as wheelie bars IMO its more of a preference. Going to Memphis I see cars that are running mid 7's at 170-180mph and they dont have a wheelie bar. But my car will NEVER be that fast so I don't have to worry about any of that stuff! lol.
You go to Memphis Motorsports Park? I used to go all the time (not in the Impala) when I lived there a couple years ago. I still come back to visit a half dozen times a year.
2004 Impala LS - got some mods sold!!!
2009 Subaru Impreza WRX STI
NAIOA moderator Still Imp'n, just in a different Imp.