Add 273's, 340's & 360's to the "318 Race" ?

I wanted to participate last year but I knew I wouldn't have my car ready. I am an afternoon or two to getting the car back on the road. It currently has a stock 318/904 in it.
I actually like the 318 only class but I can see including 273s if you can get a baseline for it.
Maybe another class can be created that includes the 340 and 360 or each engine size could be in its own class.

Either way, I would like to see the participation grow.