Originally Posted by
Roniel_R
the internals of the 35 plus and the Eagle R9 are not inerchangable,the piston/ and sleeve are different even though they are both 9port Nova based..
I heard as well the 35plus21 piston and sleeve set are interchangable with the r9. So I pulled them both apart and they use some of the same parts. The head button, rod, & rear bearing have the same part numbers on them. Both sleeves seem to match up perfect. Both start with the same head shimming. I don't see why it wouldn't work.
I would probally call someone like Murnan Modified to be 100% sure.