Be forewarned that Aircraft Spruce is a dangerous website! Many, many dollars can just disappear from the bank account, with hardly any effort.
Having used the Vetter snap vents back in the day, and the Gold Wing vent on the Connie, the Gold Wing vent is much gooder.
At the risk of sounding like the newbie I am, will the goldwing vent work with the stock shield? I've mostly seen comments about using them with Cee Bailey windshields. For now my budget says to modify what I've got.