Ok brakes lines are just about done. Need to get the last wheel done, then have a mechanic come over pressure test and bleed.

Im trying to get as much info on the fuel lines as I can. The questions I have is / are :

1. Is the only reason to depressurize the fuel system is so that gas wont be spraying all over the place. What damage can I do, if any, if I dont depressurize ?

2. Is a fuel line routing diagram available ? Chiltons dont show one and neither does eautorepair.net. I can trace them, but up toward the engine they disappear into Neverland. The two fuel lines run in parallel with the rear brake lines. Problem is, I dont know which is supply and which is return and how the fuel line is mated to connection points (flaring etc ??)

3. Can I get to the lines by taking the rear seat out ? The book mentions that access is possible with the 98, but doesnt mention any other year.

Thanks in advance for the replies.