The LeSabre Wagon was a "46" series car, like the Wildcats. I requested info on the Wildcats and rcvd info on the Wagons. I summarized the details from the Daily Car Report that I find interesting, which is Super Wildcat engines, 4-speeds and a/c. I made a spread sheet. See attachment! Hope it helps, it shows 56 of the 4635 and 38 of the 4645 Wagons came with the dual quad engine. http://www.v8buick.com/showthread.php?s=&threadid=36582&highlight=1964+wildcat