At least one part won't be a problem. NJR is making lead free 14 pin DIP 324s. Now if the 1458, 072, and the 074s are still available I'm mostly set. www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=527581 Tim Daugard AG4GZ 30.4078N 86.6227W Alt: 3.7 M http://home.sprintmail.com/~daugard/synth.htm