[cdowns]

welcome to the board// i wouldnt start thinking replacement till you've done whats required for a truck thats been sitting for a long time/changing fuel filter located in the carb where the gas line feeds itand cleaning gas tanks are 2 of the first things. then you start on the tune up new plugs and at a minimum cleaning and gapping the points i like to run new gas with a cleaner in it prior to thinking about takin the carb apart for a rebuild// change oil and filter and add a pint or so of marvel mystery oil in with it. a quick check for your plug wires is to run the engine at night with no lights if the wires are no good you'll see random sparking from them//also air filter needs to b changed and check all the vaccume lines for dry rot and cracking