Joe, I put a tank from a 76 into my 74, straight swap. The 76 has an extra couple of lines (return lines), I just blocked them. The sending units were identical save for these lines. I compared the 74 with a 71 unit that I have, identical. The 74 and 72 should be the same.....Russ __________________________________ Do you Yahoo!? Meet the all-new My Yahoo! - Try it today! http://my.yahoo.com