1986 FORD RANGER 2.3 EFI

Here we go again......I had a 50 month iNTERSTATE battery that lasted for 8 years!!!! (1995)
I went to start...DEAD. I took the battery to the auto parts place,they hooked it up, and told me it was bad. I bought a new one,put it in and it starts,but doesn't turn over...A while back I replaced the plugs/wires/distributor/Ford Alternator/Ignition Control Module/oxigen sensor/Fuel Filter/Pick up coil/...stop me anytime......and now a new battery. The only thing I didn't replace was the Distributor Coil the the distributor cap coil plugs into.Could this be bad? Plugs shouldn't go out after about a year? Maybe the alternator is to blame? all these parts are about a year old. Thanks.