Replacement gas tank for a hatchback S13 to accommodate duel exhaust

[V030211]

Hey, I'm sorry if this topic has already been covered but please, any help would be greatly appreciated. I'd like to run duel exhaust on my S13but the off-centered (shifted toward the right/passenger side) gas tank makes this a problem. I don't want to use an intrunk 5gal tank as i would like to save my trunk space. I'm looking toward using another Nissan tank from a car which already uses a duel exhaust setup (as i assume such a tank would be setup to be centered allowing for exhausts to pass on both sides -left and right). Does anyone have any ideas for me? DDoes anyone know if the 300zx tank would work for my issue?Is there another option which i've overlooked which might work out better for me?~All constructive comments and assistance are welcome. Thanks for taking the time to read this and thanks even more for any helpful postings which result~