Doug's '68 Dart

3m two sided foam tape. I have no plans to drive in bad weather. You could use a 3M seam sealant PN 08370 if you want something more reliable.

I have two tubes of this body sealer (leftovers). Stuff ain’t cheap. Can sell for 1/2 price plus shipping.

V8-valiant said

What did you do between the floor and the tank to create a seal and not allow moisture to get trapped? I’m doing the same setup.

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