This bike is my long distance bike,
it's much nicer to ride with rubber engine mountings!
You need the H2b/c engine cases. Bore the
mounting lugs to 25mm (only as deep as needed) then fit the rubbers and
check how much material must be removed to fit the engine in the frame. Then
make some spacers which must go between the rubbers.
Here some close up pics to show how it's done.
It's the best modification for a 750 triple I've done after all those years.
It is a lot of work, but once you hit the road it's all forgotten....
Rubber Mount - Silentblock #09319-10017 Suzuki GT750