I don't have a lot of details but Ab Cox Pontiac on Wellington in Aurora is having a Show and Shine Sunday starting at noon to five. Apparently there will be a Led Zeplin tribute band.
It is a straight 30 minute run up HWY 404 for me so I may take the LeMans up for a while.
I am sure if you call the dealer you'll get full details. It would be neat to take a few Pontiacs there anyway.