Ryan Standke is building a very unique and powerful 2002 Acura RSX. Under the hood he has managed to stuff a 5.3 L LS4 V8 and large Garrett turbocharger. The engine will start on a conservative 10 psi of boost which should produce between 500-600 horsepower. To handle this level of power (and probably more) he has reinforced the frame and structural panels. Recently he had his friend Sean, who built the LS4 powered Saturn, over to clean up the wiring harness. Ryan is keeping a lot of details of the build a secret such as what transmission he is running but I am sure we will be seeing a lot more from this build.
Source: Sean R (Saturn SL1 w/ LS4) and @Standkes_Garage (RSX w/ Turbo LS4)