Originally Posted by 
debruiser
				
			 
			I'm pretty sure you can use the tanks either side. you would have to cut the hole for the filler in the front edge of the tub where it meats the seatbox, I'm pretty sure it's standard practise stuff.  Even if it's not, you have a land rover; it's all about custom building things! 
I'm going to build a tank for the left side (under seat) to fit under a toolbox/battery carrier.  I'll just steal the sender and things off an old tank i've got laying around.  I'd give it a go if you feel confident you can weld it up so it doesn't leak!