I cant understand why the Rx300's are now grouped with the RX330's while the RX350's have their own little subforum. shouldnt the 330s be with the 350s?"

I guess because the RX330 uses the same engine design as the RX300. They just modified the engine slightly to get the added displacement. When they went to the RX350 it now has a complete new engine design.

And also because of the almost impossible task of weeding through the 330/300 posts.

and so the truth comes out, haha

I be real, I be real