Let me tell you, since mine should be getting here today: You need either the GPM 313a or 113a motor mount to mount the triple oil shock.
I ordered the 313a mount since it accepts both GPM and stock motors, looks hella cool, and cost the same as the 113a mount.
I believe the only reason it is needed is for the center shock and it's "possible" that one could fabricate a center shock mount, but I'll tell everyone what I find when it arrives.
Jeff
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