Funny poll this... I'm in the process of making my S3 track ready! We've all seen how succesful Prawn is with his A3 track car, and it Fwd! And since I will need to change the rear diff at some point, I was considering junking it altogether!! lol So should all S3's stay 4wd, or shall I convert it 2wd to save weight, and possibly make it more fun to drive at the expense of traction coming out of corners? Edit:Forgot to mention that in the event of replacing the rear diff, I have a Haldex Performance Controller to go on.