Ihave the GP mount also. 40-70 size. Ihad a heck of a time drilling the holes for it, as the muffler mount sticks so far out over the mount holes. Finally drilled it upside-down then turned it over to mount it. I measured the width of the mount with the engine bolted on, and Icouldn't mount it in my 40 size trainer if Iwanted to. The firewall isn't wide enough. lol I hope my Tiger 2 (which arrives tomorrow) has a wider firewall. I'd hate to have to modify the whole nose to mount it.

I'm still breaking it in, 4 tanks through it, it's still tight at the top.APC 10X8, Cool Power 15% with castor added to 25% oil, Merlin hot plug.