OE gas tank “spacer”? Yea...step on in!

So I’ve acquired this repo OE tank for my Dart heap. It has an Aeromotive in tank pump installed that sticks out of the top just a hair over an inch. The previous owner cut a hole in his trunk floor but I don’t care for that option.

Thus I’m wondering...

What material would you use to space the tank an inch or so from the floor and still allow the tank to be snugged up with the straps? I’m thinking really dense foam rubber material, or just cut up a few tank pads??

I’m not worried about the OE filler neck alignment, I can easily solve that.

Discuss...

Thank you!