Rex, there are two scavenge lines. I wish I had ordered the other pump, that had 3, but I didn't.
Koncretekid- Respectfully, it doesn't matter. 15psi is equal to 2160psf. So, if you put 80psi in your tires, you are also putting in 11,520psf in your tires.
You could change psi or psf to newtons, and it still boils down to the same thing- 15psi is very little pressure, regardless of the area effected. The pressure remains the same, only the volumn will change.
Will the tank sides 'bow' out? Probably!