Fuel tank straps, add felt or rubber?

I am doing a fuel tank swap soon on my 71 Dart. From the factory it looks like there's nothing between the straps and the tank. Is there any point to adding anything? Such as these rubber liners?

Pair Universal Tank Rubber Strap Liners - 24" long x 1 1/2" wide - SL24 | eBay

The tank will have a new pad on top. I'm wondering if this is worth it or not. Anyone add felt or rubber liners to the straps??

Also any danger to this? This would fully isolate the gas tank from being grounded, aside from the little ground wire at the sending unit...