What fuel cell fits nicely in the spare tire well 70 Dart?

THEWHITEZOMBIE said

12 ga is the only size u can fit in there with out going crazy in cutting!

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You're right!
After doing a little math to fit a square peg in a round hole, RCI makes a 12 gal cell 17x17x11 that drops right in.

Now, because of the sump hanging down, do I need to make a support for the back half of the cell to prevent sagging?