Fuel tank mounting orientation

Which goes straight up? See pic attached.

Fuel pull/return/sender

Vent cap

Or 50% between those?

 

Appreciate it, had old tanks oriented for the vent, wonder if thats what caused em to always read 3/4 full at max fill

Any advice on how long to cut the fill/return necks? Its a 24.5 tank, they gave me 28 inch tubes

 

Was this style, no arm, which i cant find for a 24.5 tank, so maybe its actually a 22inch... eh, inaccurate fuel gauge wont kill me (and personally i dont like the arm style sending units)

 

Any thoughts on adding a screen or just leave it a bare tube?

 

Ty

Just gonna ride this question alongside since enough people that know stuff are already here

In pic, 2/0 cable goes to one each of the start batteries

Theres a few knicks in both positive wires due to terrible placement, better to just wrap those parts with tube and replace with 2/0 or use the new 1/0 i have on hand?

Runs are about 6'

(Also alternator hot wire is relatively stiff from vibration/heat and only 1/0, when replacing that i assume that deffinitely should be replaced with a 2/0 since its almost 15 feet?)