I don't think there are any Jeeps big enough for that one.
It's set up for buggies and winch challenge trucks, do-able in a well set up TJ, but there'd be no chance of winning or finishing the event I reckon.
I've driven most of the creek run, and it's f'king cool! but I'd hate to run it at speed against buggies on 40" tyres and 18" coil overs..
I'll be there watching though