Mine is a J version but the exterior looks more like the Sport version with wide fender, alloy rim (16") running on 235 x 60 rubber, except that it didn't come with a rear spoiler which I still feel a bit reluctant to drill the hole
Interior wise I think it's not much of a difference compare to L series except for a pair of tweeters on the side mirror panel.
Rav4 J version .. I think is only availble in Japan. It came with "smoked" (blacked out) headlights and foglights. As for rims I believed it came with very basic steel ones. Its marketed as a sports version that we have in America. (RAV4 S)