so far, no issues with the D2 coil overs. They have 30+ click settings from firm to really firm. I keep them at five or less clicks toward the less firm.

They are still a tight ride, more than OEM shocks. If there is a bump in the road you will feel it but the tires will always stay planted on the pavement. That is the plus, you feel the road and always have excellent control in turns, bumps etc.

Do I wish I could make it softer, yes, a little. But since we have two SC430s, one is the quiet, refined, cruising SC (2007) and the SC (2002) is the louder with removed resonators, coilover, poly urethane bushing car that’s fun to drive in a very spirited way.

The upper control arms are aftermarket, along with the rear lower control arm extenders, both SPC.

The caster was out of spec on the front and not adjustable so I purchased the SPC upper control arms allowing the caster adjustment.

when I installed the coil overs, the car was lowered about an inch which required the SPC rear lower control arm extenders. My rear camber is less than .05 degrees from 0. I wanted no tire wear.

hope this helps.

To add to bgw, you need to make sure you get the toe set correctly. Camber gets all the talk, but toe being off will wear your tires even faster. With his poly bushes up front, less you was put in it. This is because the toe doesn't change as much as with the factory bushes. If the bushes are worn out. set the alignment all you want, but under driving load it will still be off.
That said you need to find an alignment shop that will set it to a tight specification like bgw has.

one of my questions is answered by the pictures. That being, do they have separate ride height, and spring preload. Because it has three locking collars that would be a yes. My other question then is, do you have to remove the bottom eye bolt to adjust ride height?

hopefully, this will answer your questions...it’s the FAQs on the D2 website.
https://www.d2racing.com/faq/

yes, that's kind of vague. I knew you turn the lower mount. It doesn't state if just the outer tube turns independent, or if the lower eye turns with the tube Like a regular shock does. I guess I'll have to contact them then.

this might be better