Managed to install the retail DVD version with no major errors on Lion in CrossOver 11.2.0. Does suffer from big black blocks gfx error making driving almost impossible though (as noted in Shift 1 as well in the Wine AppDB database).
Strange thing is though, right after install during the first preliminary races these blocks didn't show up and the game worked normally. At the 2nd race they did pop up. Still investigating.
When it was running, it seemed pretty fps-heavy on my Mac mini 2,5 GHz Dual Core i5 w/ATI 6630M gfx chip. Guesstimate about 20ish fps on medium detail.