Russ, you just need some 50lb plates that can be bolted over the axles in the trunk, think you've seen that before, as far as the grid, I went to Mopars at the Strip and visited with a bunch of my old racing buddies this spring, didn't run the car just flew out. But some old friends of mine who run stock were running the grid, and its legal if its the one where you can just review your run, but you can make changes in timing also.