Pretty certain Rob's and Richard's chassis both are sub 6.0 certed. Rob also recently purchased a turnkey TAD car that they will enhance and begin running at some point next year (in TAD of course).
We had fun racing there this weekend, but there is a bit of a learning curve to being pitted inside the Nascar track .... a wind change during our round three made me feel like an idiot as the car ran 3 mph slow and driving down to pick up the car I could see all the flags on the trackside RVs showing a headwind .... weather station sitting in the bowl of the Nascar track was not seeing that and you couldn't feel it in the staging lanes .... oh the joy of fast bracket racing.
Rick, most of us cert to a 6.0 chassis, but the guys with the big blower combos tend to be running ALKY chassis instead.