why would you want headers, the truck came perfect from the factory
with headers, you sometimes get what you pay for. if you do a search on here, you should find lots of helpful info. about headers, both long tube and short tube.
as long as you put some anti=sieze (i believe) on the olts before you put em in and you torque em right and check once in a while it shouldn't be a big deal. Also try and look for headers that have a nice, good, thick flange on them and have good welds.