Research so far, (hopefully accurate):
"Surgin" was supposedly the last Cougar built out of wood.
It was originally Eddie Trotta's Rampage, was bought by Howard Arneson, (with Tony Garcia), in 1983.
It won the the World Championships in Key West 1983 as Arneson Special.
The surgeon Larry Spergel bought it in 1984 , changed the cockpit and the name, and won the APBA Open 1 World Title.