It's modification to the tank that I'm looking at (think inverted boxing). It will reduce the capacity of the tank but the bike's not going to be any sort of long distance cruiser so mileage isn't an issue. The seat is going to be a brat style so there'll be no hump to hide it under. I'll be considering the Antigravity type of battery (& possibly...but not definitely, as I've a feeling it could very easily bite me.......kick only & so having an even smaller battery to squirrel away somewhere).
It's a sheet metal / welding magician that I'm trying to track down!