Fastback tank install ? Urgh !!!!

I may have been a little vague... I have the filler neck loose from the quarter panel but the carpeted floor pan and interior quarter trim panels (wheel housing panel) keeps the filler tube from coming up far enough to get a straight shot at the tank inlet hole.

Does that make more sense ?. I am hoping to not have to remove all the rear interior panels since it is a biit of a hassle to do....