where is crankshaft hosung stamped

[wildpix]

friend in ***** has a busa that needs new bearings, and is asking me to bring back with me when i returm i understand they are colour coded, he has located the crankshaft stamp which is apparently AAAAA , but where is the crankshaft housing stamped, he hasnt been able to find it (inside/outside the case etc?

any help appreciated

 

[202mphbusa]

 

[Kiwi Rider]

At the rear of the cases….
Welcome along!
It’s all in the service manual… use the search to gain a free download service manual link.