The Loofah Racing Uprights are the ONLY uprights that are chassis mounted and allow an OEM bumper without any interference! These also work with most aftermarket bumper bars on the market! We added slots for some adjustability with wing choices, you just need to provide an adapter for your choice of wing. This will directly bolt to a 69" NRG Wing or 9-Lives Wing! The wing will sit almost flush with the top of the hardtop for the most ideal placement on the MR2 Spyder!