Great feedback as always, thanks Mike! I've been leaning that direction. It is going to take a lot of effort to get to that weight, I suspect... it is competition weight, so includes driver, which doesn't help at all
but based on your feedback I should probably add another scenario
#5 2,900 lbs NA 340 rwhp little tires (275 series all around)
That creates an even more ridiculous weight target, but based on Mike's input might be optimal.
Others?
FYI PIR layout: