Need help identifying year and model of a Lowe Line boat

[3rdtimesthecharm]

I have a Lowe Line 16Ft. v-bottom.The id# on the transom is E278449.There is also a plate on the inside of the transom that is faded too bad to read except for the # 720052 embossed in it.The earliest i know the boat was registered was 1973.Any help will be greatly appreciated.Thanx.