i own a 2005 f350 built 8/04 the engine says it is 2005 on the valve cover. my vin is 1ftww31p35ea58488 .also how can tell what series/revision of head bolts/gaskets are on my truck. my truck has 46000 miles on it after reading some postings on line i am little scared of my 6.0 coming apart . if there any signs to watch for please let me know. my truck is all stock except for airraid intake.