Hey, that one in the Wing Mfg. booth was MINE! And so are the retracts. Really, the new owner (of Wing Mfg.) is a member of my club: the ThunderBirds R/C Club, and Dan asked me to build one of his Corsair kits so he could display it at Toledo. I was not able to complete it in time (I recieved the kit in late Feb.), but he chose to display it anyway. The retracts are the same ones used in some 40 size ARFs, and cost $25 a set. The design looks good: simple but effective, but with only 5/32" stuts they would not be robust enough for 1/8 scale Corsairs. Thus, there were some discussions with B&D (next to the Wing booth) to see if he could come out with a heavier duty version. Here is link to those retracts:
http://www.ecsvr.com/abm/shopdisplayproducts.asp?page=7
I still haven't completed the Corsair yet, and construction is slowing down now that warmer weather is finally here, but I intend to have it flying at our club's WarBird Day, Sat June 28th. The Corsair BTW, shows what can be done with a foam wing: it has 1/16" strips on outer panels to duplicate fabric covered wing ribs as in the full scale.