mid america motorplex

Good deal Ryan, I would much rather laugh at broken Chevvies on the starting line! :finga:
I don't care what Mythbusters tests show, pole vaults suck!:sad2:
You might consider upgrading your u joints to a heavy duty version, a quality product like Dana/Spicer or Moog if your existing ones are unknown or of questionable quality/unknown mileage or age.
Does your duster have an 8.25 or 8.75 rear?
If the thing winds up making some serious hp like I think it will, Moroso (I think) makes non greasable solid hex versions... the grease passage could be a weakness with good traction and high hp. If it grips well, the car WILL find the weak links!
All part of the fun of being a gearhead...

Alan