ignition problems on a 1981 G20 Chevy Van
 

Hi,
my buddy owns a 1981 Chevy G20 Van, and he is experiencing ignitions problems. It is like there is a filter in the fuel line pluged, but he installed a new carb. Now we wonder if there is another filter in the tank area, and I guess it is wise to convert to a HEI system ignition. Which HEI system would you recommend? Any help is welcome.

Best regards,

Tom