Join Date: Jan 2019
Location: Sedgwick, Kansas
If your car gets gobsmacked in the back end, and intrusion is severe enough to rupture/puncture the tank, I don't think it matters whether it's strapped or bolted in. This would seem a moot point to me.
Perhaps the straps would snap after it's ruptured, and allow the tank to go skidding merrily down the highway throwing sparks as it barbecues the underside of your car?
Point being: I would not spend a lot of time and trouble changing everything about how the tank is mounted, for a very dubious return on 'safety'. For those saying "well, this is how modern carmakers do it!" you have to also consider how the frame of the car is designed to protect the tank. That's where the 'safety' comes in. The straps are typically for ease of installation/removal, especially since a lot of cars require you to drop the tank to get to the fuel pump.
If you think the straps are a big safety feature I think you're mistaken. Not saying it's worse than screwing it into the trunk floor. It's just different. For a Mustang or Cougar, I think it would be pointless. I am pretty sure a fuel cell would be a much smarter way to go, whether it's just a drop in like the original, or a strapped-in version that took you a month of Sundays to engineer and put in, along with tank armor, etc.
And putting your tank in the engine compartment next to all the moving high-temperature parts, high-voltage sparks, and combustion? genius! The only thing better that I can think of would be putting the tank in place of the passenger seat to ensure its protection from rear-end AND front-end collisions. *wry grin*
"No matter what you are, be the best one you can." -Abraham Lincoln