Front lift (aero)
 

How is your suspension? (Shocks, bushings, swa bars, etc.) Are they recently refreshed? What size tires are you running? Could be a hundred things, but I would start with the basics. I think aero is probably the least any 986 owner's concerns.

https://forums.pelicanparts.com/porsche-boxster-cayman-996-997-parts-sale-wanted/1145233-fs-996-02-05-front-spoiler.html

https://www.pelicanparts.com/techarticles/Porsche-996-997-Carrera/107-BODY-Modifying_Your_Wheelwell_Liners/107-BODY-Modifying_Your_Wheelwell_Liners.htm

you can also do the gt3 vent thing but oem parts are big $.

joe toth does fantastic work as well ...

https://www.facebook.com/joetothcomposites/

Yes, these things plays an important roll on the suspension, along with a good alignment, also you could lower a bit the nose (for stetic purposes only) but looks ********************in.. :-)

Agree that the speeds of a street Boxter would not benefit with any aero, assuming that all of your suspension bushings are in good shape, get a performance set of struts (like Bilstein yellows), new tires with a nice alignment and you should have great handling car, keeping in mind that these are 'momentum cars' you will end with a fantastic platform!

Suspension is in good shape, but the shocks at 76,000 miles are suspect. They are not going to make it lift, though.
I believe that venting project is a good idea. I don't understand why that radiator air is vented DOWN. Otherwise we would all have GT3-style smileys on our noses!

When I got my Boxster, I changed out the shocks and it made a HUGE difference in terms of "front" lift. It's not so much the mileage but the age of the suspension that makes an impact to the driving experience.

If you are going to move forward with aero, Joe Toth is the man.