I added the white spoiler to my Model 3 SR+ and really like the look the spoiler has given. I would be interested to see if there is any drag coefficient improvement for this add on. It doesn't come with instructions but some guides are available on the internet and it turned out good. I let it cure for 75 hours before removing duct tape for support. So far I have had it up to 74 mph on the interstate in the rain without any problems.
Bought the painted white trunk spoiler for my white Model 3. Fast shipping. Easy to install. Looks great! Price was very affordable compared to others that I researched. Now my car has the Performance model look.