Rearend modification costs?

I've heard this argument too. It comes from guys who never tried to swap third members on a regular basis. It doesn't happen very often.

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:..