91 Camaro rs V6 3.1l possibly fuel

Okay, I just bought this camaro, and when I first got it, it had a hole in the fuel line right behind the fuel filter. So I had to replace part of the line and the filter itself. We test ran it and it didnt leak and ran fine. But when I got up the road a little ways and started up a hill, it died and then didnt wanna start for a little bit. But then I cranked it and it started up no problem, started driving fine. I dismissed it thinking it was just the fact that it was lowon gas and maybe some air in the line. Got about 6 miles down the road, pulled up to a friends house, parked it and got out, came back about 10 min later. Went to crank it and it wouldnt start. It would crank, butnot fire. So again I dismissed it thinking it was just outta gas again. So I went and grabbed my gas can outta the trunk. Had about 2 gallons in it. Dropped that in the tank. Went to crank it. It turned over, but then it wouldnt stay going. If I touch the gas pedal at all it dies, and I shakes the entire car really bad, like after I start it up it acts fine for like 2 seconds, but then it starts shaking really bad and if I touch the pedal, dead. Got me stumped. I checked the line and its not leaking, but my buddy noticed that gas was leaking out of the exhaust pipe.
so now I ask, could it be the spark plugs, or could it just be that its still low on gas or maybe just flooded. Dunno whats going on