Hi
as i understand the disk should be the same on the mount for the difrent engines but the alubeams is difrent.
as i understand the hyde ara for 160 dz is only us the rear mounting holes on the engine.
i have also used the Budd Mount on the Twister i had with an Ys and for those the mount for OS and Ys where the same as i understand on the Budd website
http://www.rcuniverse.com/forum/m_5243312/tm.htm