Navaleye, did you see my post above?
http://www.pprune.org/7361954-post146.html
ALL A-4s had some version of the ESCAPAC seat.
The Arg A-4s had the early ESCAPAC seat, while the A-4s in USN/USMC service past the mid-1970s (retirement of the 100 USN/USMC Reserve A-4Ls [upgraded A-4B/C]) and all A-4s manufactured after 1962 had significantly improved versions of the ESCAPAC seat.