Tein Type FLEX Coilover Damper KitInstallation difficulty - Medium (direct replacement) Install time - About 4 hoursModels - G35 COUPE 2003-2007Cost - $1,969.95Advantages - - 16 way manual damping force adjustment knobs- Pillow ball upper mounts are included.- Short Stroke design for improved comfort and performance- Aluminum spring seats and locks for trouble-free adjustment- Teflon coated shell case for increased durability- Full-length adjustment system for separate ride height and spring pre-load adjustment.- Powder coated lower bracket for long lasting finish

Tein Type FLEX Coilover Damper Kit Contents:- 4x Adjustable shock absorber- 4x Main spring- 4x Lower spring seat- 12x Spring seat lock- 4x Bump rubber- 4x Dust Cover- 2x Hook spanner- 4x Pillow ball mount- 1x Instruction manualDisadvantages - none you have full control of ride height, spring rate and ride comfort