RMi has converted the Radical SR3 and SR4 prototypes from RACE07 to GTR2, enriching the simulation with two nimble prototypes.
The cars come both with stock RACE07 physics as well as in a special RMi version, other improvements include additional graphic features like glowing discs and enhanced shadows.
Edit: Download links removed due to possible illegal conversion – Awaiting confirmation
Download Radical SR3 for GTR2 Here
Download Radical SR4 for GTR2 Here