check your starter relay you can swap it with the one from your horn, also open up the small progs slightly on the relay so you know its making full contact. check the fuses too but the first thing i would do is check the batt for 12 volts good luck
sup man good to see you using your arm , you looked a lil down the other day when you stopped by . if you need a hand let me know man .if you plan on sellin the dr's ill take them . the truck looks good man a++++++ .
call 4 wheel parts they should be able to help you (877) 474-4821 ask for jeremy kite let him know phillip told you to contact him, if i recall the dampeners are the same size but i could be wrong .
if its the newer body style it will be diff at the mounting points but if its older style if will fit if its a serria denale it should have the 4.10 already