JohnsRiv

Just purchased a 70 Riviera. Had it for a couple days & when I went to start it, all it does is crank. It has spark but no fuel going to the carb. It has an electric fuel pump in the tank, I checked the power going to the pump and it has power; I hooked up a 12 volt directly to the pump and disconnected the fuel line to the carburetor & nothing came out. I was wondering if I could put an in-line electric fuel pump on or do I have to change in out from the tank? Also, anyone have any suggestions on the best places to buy Buick parts like this? Any help would be appreciated John