I need to order new brakes for a friend of mine, for a 91 Civic Si. I know the fronts are discs, but what are the rears? I thought they were drums, but I wasn't 100% sure. Also, I've heard the rear drums can be 7 3/32 diameter or 7 7/8 diameter how can I find this out short of actually just measuring 'em?
Thanks

 

the rears are drums but I cant remeber diameter

 

I think the "big" rear drums are for the station wagon