e36 m3 gearbox help

[detour]

hi all im building an m50 turbo e30 and have brought an e36 m3/328 gearbox all i need to know is how i can tell its an m3 box i know they are a s5d320z but cant see this number anywhere on it ?
also i have a 3.2 m3 lightweight ally flywheel and uprated clutch will the standard m3 3.0 release bearing do for this?

cheers all

[Gunni]

just look up all the numbers visible on the gearbox.

[detour]

can you recomend anywhere to crossreference the numbers

[Gunni]

you can also just google them , one or more will come up with a result