Among other things your street roadster will have to have rear fenders. The fenders will have to be mounted in the stock location so this pretty much dials out channeling the body. The floor boards and trunk floor have to be above the frame. The hood can be stretched a max. of 3" in the blown classes. Driver must be seated in the OEM position, left or right of the drive shaft. No open louvers on the deck lid or other air ducts. Headers must be able to be capped off, no indivdual stacks, collector tubes must be used.
Any body else? Stan Back is a competitor in the class, he will have more to add I am sure.
DW