Gen Omega SMP case back swap

[MZ]

I came acros this gen Omega SMP case back on the bay.

http://cgi.ebay.com/Omega-Seamaster-Bon ... dZViewItem


I would love to upgrade my SMP with this case back with the little globe etched into it.
I wonder if this gen case back would fit a rep SMP case. I remember having read somewhere that it should fit perfectly.

Does anyone here have some direct experience with this?

Thanks