Compared to the IMS I destroyed, the fitment was CAKE! there is no reason not to get this tank for a gen-1! took my like 15 minutes to fit it where I spent hours on the ims before breaking through.
The headstay area fits fine, but it was touching the headsyat slightly so some slight adjustment was required. The IMS was crazy around the headstay and made it impossible to fit, but it totally cleared the head and plug. Its the opposite for the Clarke, I had to mash a little in to clear the plug, then one spot on the right was touching the head barely and one spot on the left was pushing on my coolant lines. Evereything was really close though, the tank actually fit right out of the box.
![Image](http://pho.sunrisehvac.com/500/tank/clarke%20tank.jpg)
The IMS seemed like a better quality tank with better plastic and better bike fitment (the clarke doesn't fit the shrouds and rad very well) but it was just too much work to even try to get it to clear the head stay and the back of the head where the headstay mounts.