not to bust your bubble, but and series with a 25 or 28 at the end is not worth racing.

330i/330ci and 530i are quick

335i/m3 are fast

any 5/7 series with 30 or higher will probly have a v8...

Some good cars to race are 330ci/330i, mustang gt auto's, audi tt's. wrx's, monte carlo ss, acura cl-s/tl-s, acura TL, rsx-s/civic si, other grand prix gtp's, ford fuzion v6, maxima 5.5 gen, altima 3.5, lexus is300, etc