What If Build Ideas...for Land Speed Racing

Is the change to an R5P7 to get you out of the blown classes?
No change actually made. Just researching how to make HP. I didn't know those were even available until this AM. Little out of touch. It will be built with the 383 for now and decide down the road. I need to get it built and drive it, then worry about the best way to make the HP. Likely may just make passes in Open/timed if needed. Then I can do all the aero I want also, just chase the slip showing the magic number. I have some ideas if I wasn't limited by class rules.