I've had a couple of 5 speed boxes on the bench, and can't remember a breather. The remote turret sits on top and there is also the speedo drive [on a Mk1] so presumably a speed sensor of some sort on a MK2. Also the reversing light switch and maybe a nuetral selected switch?
Here's a pic of the top of a 5 speed from a 2003 car
Growing old disgracefully in Queensland. Founder of Eastern Region[HMF] Sunshine Coast Chapter.
1990 Mariner Blue and white Mk1 Roadster with JR supercharger Hofner Verithin Guitars