well depends.......are you going budget? like cheapest stuff out just to get you by for now? you need to get a little more specific. you can get complete bag kits for around 900 something from
www.fbimini.com comes with the brackets front ant rear, and the notch. as far as 4 links go. thats up to you. you can go cheap and just mono leaf a drop leaf spring and block it. Or you can do a 2 link. Its up to you. but if you were to mono leaf, and buy that kit from fbimini.com you could do it all for about 1200 bucks. but thats a cheap way out. if you bought quality stuff, and 4 linked it, and did all the work youself, around 2000-2500 bucks atleast