oh...the ones we did on a monte carlo had adjustable slow downs so you could turn a lil dial to adjust for door weight and you could have it anywhere from drop immediately to stiff enough you would have to pull it all the way down and in or it would pop back up....I know it wasnt a Decah kit but I cant remember what it was.....my favorite one was the one we did for a Monte carlo...custom hinges (such a bitch) using hydraulics, so he would pop the doors with door poppers and then the doors would come flying up...it was pretty cool.