Well i do believe its 3/8s line... i literally just did this 2 weeks ago. I went into autozone, into where they have o-rings and stuff, and it was a little plastic container with assorted orange o-rings. Says its good to use with fuel. This wasn't what i bought but just something similar...
http://www.autozone.com/gaskets-and-...nt/238617_0_0/
Also its a Green package. It cost me 7.99. This is one of those things you have to dig a little. I went to Napa and they had no clue.
Here is my post from the other week:
http://www.grandprixforums.net/threa...Connector-Leak
To install, i just pulled the first oring out (which broken in half the moment i touched it), and took that old one and compared it to the new ones and found the one that fit. Its around 3/8ths. Mine was a little smaller but i think it stretches a little. Just oil the o-ring and be careful and patient with sliding it in there. All of the sudden itll just pop into it groove. Now at first, mine still did leak. (It never leaked while driving (at least that i know of))But after a few days of driving, i can not get it to leak. Im guessing the gasket softened up. Good luck buddy.
