Congrats for the mods
From my experience, the rear wheel skirts will help a lot : I feel the car more nervous every time I put them back on
Also I would add a roof extension, permitting to obtain a cleaner air detachment, then a horizontal rear end trunk spoiler placed in the alignment of the root extension. Ideally the angle should be 11° with horizon.
Keep up the good work and have fun,
Denis.
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