The clutch kit is number MB3-XTR6. Its been a long time since Ive researched the clutch stuff but I think this fits both beta 1 and beta 2 transmissions. I will include with it the different clutch fork that is needed as well as a collar that bolts to the transmission. I believe that is all that is needed for the conversion but someone can feel free to correct me and Ill see if I can dig up anything else. 350 shipped for everything. Here is the clutch kit:

 

200$?

 

Still have this available if anyone is looking