Brunito
The only reason I used the different engine mount was because of the larger engine.
If you are using a 46-52 size engine the original mount will probably work,I just couldn't get the crankcase of the MDS 58 to fit into the metal mount the kit came with.
I think most any mount will work,just make sure that the rails are as long as the original because if not you might have issues with
the cowl fitting,in other words if the rails are to short the engine is going to sit back to far and the cowl will not fit.
I hope this helps