Well, technically, the non OEM hood puts you in street mod F. But if you're tires are DOT R-comps, you could always talk to the people in your region locally to see if they mind you running with the carbon fiber hood in D Street Prepared. Hmmm, you'd have to check the size of your rear wing per the rules too though.
Parking Lot Hero
2008 WRX daily driver
2003 ZX3 23D Autox Car 42 FSP
"Hella Functional - Raced, Not Hard Parked"