Quicksilver,

It can and has been done.... but the first issue is the wiring harness, second issue is the front crossmember and third issue is the expense. You might be better off just buying the turbo kit from Ludespeed or SPO motorsports and having it done to the 2.5L H4. Then buy the Vishnu ECU to have it tuned correctly. The biggest advantage is that the 2.5L H4 has more low end grunt when turbocharged and can be tuned with the Vishnu to have your torque band kick in at 2500 RPM vs. the 2.0 Turbo's 3200 RPM.

When I still had my RS I looked into the cost to Turbo and the average cost to do it correctly was between 5-6500 grand.