The wing set up was inspired by the then current F1 Ferrari 312T. The wing sat above and slightly ahead of the nose cone on an adjustable alloy bracket.
You're absolutely right about corner exit speed affecting straight line speed, how often do you hear drivers complaining about a lack of power when it is actually a lack of exit speed? I think the Lyncar was pretty good through the air but also on a non ground effects wing car the amount of downforce you are running will dramatically affect top end speed. If the setup is off its too easy to add more downforce in compensation.