I've been offered an exceptional deal on a Radical Clubsport DSR. Essentially, it appears there's a couple ways to DSR:
If you're chasing a championship or want to run at the front you need the latest car and aero, fresh Hoosiers daily, motors from "the guy", and expensive new parts from the UK. It's ridonkulously expensive.
If you want a car to run B-mod at the SCCA autocross, go to the big old airport autocross, do TTs, take SCCA race school and possibly beat some of the rich, slow guys, do DEs, and own a real, live proper formula race car that's relatively easy on tires and brakes and can be towed behind my Tacoma and will fit down my 8' wide driveway - it would be more fun than (insert metaphor)
By exceptional deal I'm talking less than spec Miata money, and it's beautiful. I need more details but the guys stuff is pretty pristine.
I'll keep my M3 for local DEs where I'm also instructing, and the Miata, well, cause everyone has to have a Miata. The Sprite may move on when it's done 'cause it'll never look more delicious to a potential buyer.
What's the downside of a 900#, 175hp car that I can afford?

