The reason you see conflicting information is that cars are not all configured the
same or have been modified. Some have fuel pumps up front, some in rear.
Some have different sized lines some don't. Some address the different sized lines
with a special short multi sized hose, some use a filter with 2 different fitting sizes.
Some have had the fuel pumps relocated from rear to up front.
There isn't one common configuration.
The best thing to do is look carefully at what you have and determine what
you need for your particular car.
Your tank is out so it should be pretty easy.
Measure the sizes of the tubes poking into the tank area, then
see how they are attached in the engine compartment along the firewall.
Remove them and look at what you have and see if it is something that you
want to make yourself, if not buy the pre-made ones and figure out how to
adapt them to your configuration.
If you don't have a set of calipers, borrow a set or buy a set. It makes measuring
all these hoses and tubes really easy. I have a
set from HarborFreight and use them all the time, they aren't expensive:
6" digital CaliperYou shouldn't need to do any welding. You have a 76 so you already should have
the pump up front and it should be a really easy replacement. Just measure
what you removed and replace the plastic lines with the stainless lines.
Here is a thread I did with a few tips on removing the lines. They do come
out really easy once the 2 retaining clips are loosened.
Here is a link to that thread:
Autopsy of Plastic fuel linesDon't over think this, it really isn't that hard.
--- bill