GIVI E45 monokey topcase mounting plate

[KTM250rm]

I see GIVI has a E149 and a E149M mounting plate for the GIVI E45 monokey topcase for a 2011 F800GS. I have the case from a 2001 KLR650 and would like to purchase the correct adapter plate so I can use this topcase on my F800GS.

It looks like I would want the E149M as it looks like the E149 attaches to the side mounting brackets for side saddle bags.

Thanks,

Rick