Day Cab Battery

[PaulNZ]

I want to try and get the perfect size battery to fit under the seats in the cab so I can retain most of the interior, or I will put it in the chassis rails and put checker plate over it, this will be a last resort as the trucks in the bush have open chassis for obvious reasons............

Thanks for all the replies, all good options.

I will post what I do when it works so you can all see.