Popping/Clunking noise

looks like they're ready to sell to someone who wants to put them on a lowered 5 lug lol (you pull the middle leaf and use the 5 lug overload and it lowers ur truck like 3 inches)

 

springs do look ill.lots of members upgrading and selling there low miles stuff on west coast.there is a freight co called pacific alaska freight ,office in kenai.westcoast folks ship it to there office in fife washinton[seattle]and they barge it for affordable prices .find someone in seattle area that has some they may just drop them off there you just pay for barge service.it seems no one wants to ship to ak but if you tell them fife in wa they will.ak's used parts are pricey and heavely worn.alaska spring could set you up with overloader spring but they are pricey as well.timbrens overloaders might be your cheapest solution 200,you install ,quick solution ridding on stock bump stops .you wont regret getting those and they will work on any spring you choose to get latter.check out the timbrens!