looking for the gas guage sending unit to fit in the tank on a 37 60 series caddy,mine has the fuel pickup tube as part of the unit itself,others i looked at had the pickup tube was seperate,it only fits the 60 series for 37 and 38,the lasalle for the same years 50 series,and the 38-65 CC,according to my parts book,the pickup is fine just the float part does not tell how much gas is in the tank,or any help on how to repair the old one. thanks Harvey B