My friend, this isn’t about how to build a car, and I don’t know why you’re trying to force it. This is about spending money if you have it and want to spend it on something relatively unknown. It’s what OP asked for. Not a lesson on building an 8 second track car.

The point of this was what people might not know about that you can buy if you’ve got 6 figure $ burning a hole in your pocket.

Not how to build a budget fun AF Honda that will blow up after the Nth overboost.

DIY race car, street legal. ~$55k for the base car, $30k for engine and transmission. Then add all the rest for things like tires ($2k) and whatever further refinements you’d want as an owner. All told, probably $110k DIY minimum. Play with your choices here. Cheaper than any modern supercar, even the used ones.