These springs are awesome, roughly 1" drop all around. I prefer the more 'sport' ride style of the performance springs. Say for bumps where you used to bounce a couple times while stock, is now just 1 good bump and no bouncy-ness. turning is much more firm/confident now too. I paired them up with RS*R's rear LCA and RaceCompEngineering's front strut top hats for fine tuning with alignment. (you don't necessarily need, but may as well since you're taking the struts out to install) Perfect to go along with new set of wheels.

They look good.

These are fairly straight forward to install if you have the tools. I think all the tools I used were 12,14,17 and 19mm sockets / wrench and a spring compressor I got at a local shop. Takes a couple of hours tops and easier with a friend for the fronts. These springs are amazing though I have almost 20k on a set for my 370z and I'm sure these won't disappoint 20k later.

I had a set of Swift Spec R springs on my previous car, an Evo 8, for many years and was happy with them so I decided to get them for my new '18 STi. I was looking for springs with just the right drop that work with the stock shocks, and these fit the bill perfectly. The ride quality is just slightly stiffer than stock as expected. I'd definitely recommend these springs or the RCE Yellows.

I paired B8's with these Swift springs on my 19 sti. Handling is way better than stock and the ride is much smoother than stock. You can really feel the difference on turn in, it's nice and flat, while grip is fantastic. The back rotates better now as well. The drop is right where I want it to be, no more wheel Gap and no sagging at the rear. I'll be adding some sway bars and LCA's next to be done with this phase of suspension upgrades.