i don't understand why? it will cost way too much money, void warrantee, and kill resale. if you want 4 doors and stick, look at the mazda 6, alitma, or maxima. does acura make the tl-s with a 6sp yet? i here the cl/cl-s is going away so 2004 may bring a 6sp tl-s. hell how about the acura tsx? whatever you do, don't do a 6sp conversion to a brand new car.