I was looking into throwing a twin turbo setup on my tuned port injected smallblock.. some dude on thirdgen.org was selling a setup he fab'd, minus the wastegates and intercooler...
I was really tempted to do it, but i realized i'd sink over $3K into the project and still be running a stock computer, which ideally i'd need to run an ACCEL or FAST computer to be able to tune with bigger injectors for the boost instead of using a FMU as a band aid fix to bump up fuel pressure for boost.