The mount should be similar but that would take me getting a hold of another GS as I sold mine for the MC. However, I think I should have a red one in the shop soon. I will take the measurements off of it, take multiple photos as well.
The mount location will be to the left of the crank pulley so unless they put it in the air removing the splash shields they shouldn't see it easily. They would have to remove all of the engine plastics to look down and spot it from the top. I'm attempting to make the air intake going down to it inconspicuous as possible. I'm not sure how tough MOT is. With insurance, I don't think it's a good idea in any country to tell them. "I took this stock Exotic and increased it's horsepower by about 200." At least I never would. How is that important to appraisals, you never get your money through insurance on those type of mods here in the U.S. anyway? Additionally, I don't know about you guys but in the U.S. they wouldn't recognize a GT from a GTS from a GT MC Stradale other than by VIN number. There a so little understood exotic.