i found a 18hp johnson at the dump today , the tag is missing, it looks a lot like my '58 but has a fiberglass hood, '60 something i think, it is stuck , but i will soak it and fiddle with it, the thing that looks like a frost plug has # 328268 on it, looking for the year, if any one could please help, it looks like i could use the fuel pump to convert mine to one line