What I always did is before putting the suspension on the car, I max it out to the end and then I count how many turns it takes to get to stock height. do it on all of them with the same amount of turns. then count how many turns to 1 inch lower( that's how I put my last car 1 1/2 drop ) lock...
Ive been looking into these as well and from what ive read, its all about how many lumens they put out. 2500 lumens is the minimum but I saw a set at 5500 lumens for 120$ but now im seeing hid kits for cheaper than that but I question its quality.
Please let me know if you put them I want to see...