My scenario is previous owner swapped a 1977 2F into a 1970 FJ40 which originally had the 1F. Gauge cluster is 1970. Temp sending unit for 1970 is the longer version and will bottom out using the shorter 1977 union. Who has found the proper union to fit a 1970 Temp sender into a 1977 2F? Attached photos are of shorter version for 1977 model. Other is longer 1970 version.