1983 Pontiac Firebird TRANS AM

I bought the car in 2014 on eBay from California.As far as I can tell it is ORIGINAL PAINT AND SOME ORIGINAL DECALS. The pinstripe and side birds look original. I added the door and window decals recently. When I got the car, I changed the fuel pump and fuel injectors. Got an antique plate for the car in Pennsylvania. Drove the car around for a few hundred miles and while stoped at a gas station one day and when I tried to start it to leave,, NOTHING.. NO SPARK... I tried a different computer- ECU and removed the old Clifford alarm system. That did not solve the problem. So I just put it in the garage until this past winter. I decided to put a four barrel carburetor and an HEI distributor on it to try. It ran for a short time and now it is back to getting fuel and not starting. I have it listed as a PROJECT..