First, you wont be disappointed with the OME! Its what I have now, I used to have the Daystar budget lift. You definitely need the HD coils with the weight of the XK, some people have gone with MD and had issues with the front end getting barried under hard breaking. Also if you go with MD you lose approximately 1" of lift. Some people are running the .25" spacer up front and Matt made a set of custom rear spacers as well, but you dont really need the one up front and with it, Matt will tell you, you will lose down travel. The kit no matter how you buy will run about $800 all said and done, its suggested getting new coil isolators to make the swap in and out easier, else you have to take apart the sotck assembly that has 70k on it and install on OME. The HDs do give a stiffer ride over stock but not an uncomfortable one, it feels more stable and I happen to prefer it, its a matter of desired ride and opinion. Hope this helps others will chime in but you wont be disappointed!