OKay I hadn't driven my car in a month until I went to switch from shorties to LT's. It took me 20 minutes to start the car (with jumper cables) however it ran fine I drove it to the shop and it started fine their and when I got done swapping the headers it started up like 2 or 3 times at the shop without any trouble I then drove the car to Wendys and it wouldn't start back it would turn over and occasional would spit back through the intake, I tried jumping it but no luck. The next day I went back and it started fine, but once I got back the house it wouldn't start back. Two days later my dad started the car right up and it drove fine to wal mart. He put a new battery on it and it wouldn't start back. He towed it home and when he got it back to the house it started but he said it ran really ruff like it was going to die. Does anyone know what this might be could it have something to do with my 6AL MSD, PCM, or something fuel related? I'm totally lost so any help would be great.