Steven, kyb recommend to only use this for about 1-1.5 inch drops only but most people around the boards who used these with the sportlines said that its holding up really well.
i got them for 360shipped from bottle. www.titanmotorsports.com
Bottle is doing a groupbuy over at the OTHER site and is offering them with free shipping. The site's asking price is 360 plus shipping but if you were to include in the comment box that this is coming from the groupbuy, he will take the shipping out himself.
This groupbuy is still going on, actually just give bottle a call and he'll hook you guys up. You can get his number from the site and trust me guys, the service is excellent and i got my strut 4 days after i bought them.