This is true, but I think the stigma and the fun of F.A.S.T is that you can make some thing that is there already look heavy but be feather weight in reality, otherwise if it's just a bunch of option delete stripper packages being introduced to the game, might as have Factory race cars join the rumble ie: A990, A864's BO29's, Lo 29's K-codes, R codes, Z11's and so forth.
I think a factory stock Factory Race car series should jump off. Darts and Cuda's with the gel coat black front ends and skinny jean tires and all. What a show that would be. Though I would think that the T-bolts would have a clear advantage in the tire department.