are those the same for all the gm lines, like earlier year ones and the tank vs were it connects on the rail? all the same?

i found the weakness in undercoating i guess because i thought the leak was the line i just worked on but this is a new problem actually, its now leaking from the top of the metal were the undercoat obviously cant get to. my initial thought is to run one long piece of nylon from the tank to the rail, but not sure how the stuff would fair a couple 90'* that are a little tight

As far as I know its the same O-ring they have used since the 80'*. Until they started using the quick disconnect fittings.

what do you mean? they are all quick disconnects. you mean like on the trucks that have the tool that pushes in from the end?

Sorry I was thinking metal pipe = ferrel nut fittings with o-ring. so yes that part number won't work. sorry. I did find these fittings that you can buy to convert stock quick disconnect to racing AN fittings so you can use stainless fuel line or the high temp blue fuel hose.
Stock Lines Fuel Injection Fittings

image-1823131827.jpg

Here is a pick off the net showing what I'm talking about.

Summit.com has a whole line of aluminized fittings and lines to go with them.

It probably will cost just as much as buying new lines but it would be bullet proof and not rot out any time soon.

Well I got the GXP struts and and strut tower brace put on the car this last week. Noticed a heck of a difference right off the bat. Now to get it re-aligned and eventually get the GXP sway bar in and the front will be all GXP (and rebuilt for that matter).

went on rock auto and looked, they had 5/16 and 3/8 oring pack from dorman. i ordered them and some bulk line, we will see if its right when i get it. the dorman site lists the same pn'* as william'* pics