I know it has been gone over a million time, i assume. But im buying a 98z28 with a 2002 ls1 in it. The fuel pump is bad, and i am going to replace it, but the car is 3 hours away... I have searched for the EXACT location so i can cut in the access door..so this is what i came up with.. Basically it is in the middle under the rear seats,... and that s all i got, that and the hole should be 12inches by 8 inches. Any more info that i should know about, as i want this to go as smoothly as possible

 

 

And if one of those steel lines is the high pressure supply and you have to cut it, you'll need to flare both of the cut ends and connect it back together with a fitting.
Splicing the supply line together with rubber hose is half-assing it, and can be a recipe for a leak and a "boom".