You can turn up the boost on a B230FK, add an aftermarket intercooler, unrestrict the exhaust, and get around up to around 200 BHP reliably with it.
Much beyond that, you're looking at aftermarket engine management, injectors, wideband, 3 inch exhaust, turbocharger, transmission mods, etc to keep it reliable.
I haven't looked at the green machine. I'm tempted by it, but I have too many cars and projects already, including a 945T which I won't let go of anytime soon.
