I know I'm late to this
I've used this:
https://aeromotiveinc.com/product/ph...h-fuel-system/ in my HSMobile. It works great and isn't too tall. It also has an engineered baffle which keeps fuel at the pump intake when cornering or otherwise inducing G-forces.
If removing the tank isn't too difficult, and there's a little clearance above it, this can be a really good solution.
A couple of photos: