buy struts, stock will blow......koni reds(specials) are not too expensive compared to koni yellows.
www.tirerack.com they have very good prices. if you want you can get kyb gr2(really cheap) but you cant drop more than 1.5 in on them or they blow... I have gr2 with H&R sports and it handles really good and the 1.5in drop looks really good. I think for del sols, 1.5 to 2 inches are the perfect drop, dont go lower it will look silly