No, not at all, I'm assuming he put it in the exact same place as all of his others.
I am running the older 86 k5 motor though.
You caught me at a good time because yesterday I got my used ims tank in the mail for my 2000 kx 250.
Just for kicks I tried the ims tank on my 500 instead of the Carke tank that I had chopped and was stunned at how close the ims tank almost fit. It would have required way less modification to fit the bike, and I would have had more fuel capacity using the ims.
I will say I do like the look off the Clarke tanks a little better though, just happened t get a used ims tank for $40.