Ironically not much of his stuff is still on my/his car; what's there is mostly "extra-legal" fab tricks. The car with the most cleverness (and success) is the old Hamburger, Bachelder & Chipman car. Herb McCandless did a lot of work on some of the cars - HBC & Ed's/mine for sure.
Judging by my archive of the team cars and team members, Ed's strength was in thinking up ways to step up the SB. I can't say much about the 340/360 Only parts, as so few are around. Much if not all of that stuff was 1st run on my car or the other team cars. After he sold the Hamburger company, the guys that bought it were apparently pretty bad at quality & service from what I've heard.