70 is a one year only deal. It had an interlock lever hooked to the reverse gear lever on the trans. so to remove the key and get it to the lock position, you must put it in reverse gear. Most got eliminated by removing the link arm. It was also collapsable like the 72. The 72 column will bolt in, cant remember if the wiring connectors are the same.
Also power steering columns have a shorter shaft.
