aftermarket fuel tank setups... filler neck pics?

[Dino11]

hey, i bought a 72 lwb project truck. it has an aftermarket fuel tank after the axle. its a nice tank etc. the guy was planning on putting the filler neck behind the passenger rear marker light, having it hinge out. however i dont like this idea much, its neat but i dont think its very practical. i was thinking about cutting a hole through the inner bedside and having the filler neck come out in front of the tailgate. i was wondering if anyone has any pics of their setups, it would be greatly appreciated in helping me . sorry i have long posts.