Why not get a removable front splitter for the track?
Set the gt wing in it's most neutral position for the the street. Then bolt on a splitter and adjust the wing for the track days.
https://driftdialects.com/products/c...or-nissan-370z
Seems like this could be unbolted rather easily. Doesn't even seem like the brackets will be visible when the splitter is not installed.
OR if the wing is providing too much downforce on the track then just unbolt the wing. would look silly maybe but you're tracking the car that day, not going to a show so who cares.