Will the foxeye petrol tank, fit on the 3tj frame.

Wouldn't have thought so, the foxeye tank is much wider and deeper if i remember correct. And i think it has a different front mount same as on the R6

The front mount is the same,and the width also looks about right,but the rear end is different,i don't have a subframe or seat at the moment,so i'm not sure if there is enough room at the back,as for depth it should clear the carbs and i also thought it would give me
enough room to use the foxeye airbox.i don't want to buy a 3tj tank if this one will fit.
This is going to be a 660 so it will be taller.

I think the fuel pump sit inside the Foxeye tank. I guess anything can be made to fit it just depends how determined you are.