San, as much as I really enjoy your blunt yet factual replies to many of the topics on here, I'll have to side with jasondrew. If the OP wants to destroy his clams, he can go ahead and do so. As far as the "question" of is there any lift at speed? There is, but does the effect of said lift influence the car enough to run slower lap times? Maybe(doubtful), and that money is better spent on instruction to get faster lap times.
I too love to mod cars while I should be modding the driver. He want's to spend that hard earned money, so let him.
'05 CO Elise Mods: Yes
'01 NFR S2000 Mods: No