I don't believe that the larger 4 door gas tank will work (and its 14 gallons, apparently, so much nicer than the stock 11 gallon on the 2 door), as the frame of the 4 door where the tank attaches, is spaced differently, so its not a straight swap.
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'91 Tracker 8V, 1.6L, 5 sp, 4wd, 2dr, conv, CAMI, 'slightly' rusty
'97 Suzuki Vitara 8v, 1.6L 5 sp, 4wd, 2dr, tintop, horribly purple
'61 NSU Quickly - 150mpg
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