The Stovebolt Site Forums The Shop Area General Truck Talk What year rear fenders are the same

I see it is series EP,FP,GP, KP, H but those are not listed in part no. list and none of the part no's are the same for different years? It can't be all fenders different? just diff part no's? Not sure what I'm seeing. How do I tell if the actual fender is the same? Just to restate what I'm looking to figure out: What donors will fit what years re: rear fenders. 41 same as 46? 38 same as 42? etc. for 1/2T