Rearend modification costs?

I hear that we use to drive down to E-town with highway gears get to the hotel and spend the afternoon swapping out chucks go racing for the weekend then swap back before heading home,had it down to about 20 minutes per swap:lol::lol:..

I stayed at my sisters house in Spokane for that race and changed gears in the street right in front of her house.
Well the guy across from her happened to be a GTO guy and came over to ask me what I was doing.... "Installing new gears " I said... he asked how long would that take me.... I said about 25 mins... SILENCE..... HUH ? Really ?

hahaha..... he had no idea what a 8.75 was.