I am looking to upgrade from the 6.5 I have now to an 01-04 lb7 Duramax. Looking for advise on what I should look for. Such as injectors and head gaskets and anything else....! Thanks

Head gaskets are '01 problems. And you know about the injectors then there nothing else that I know of. All of 'em have the minor stuff here and there. Do a VIN check and enjoy. Welcome aboard, glad to see you've figured out you sig.

i would try and stay below 200,000 miles so you keep the warrenty. These trucks are pretty solid. Dont be afraid when the oil pressure gauge moves while you drive, this scared me when i first drove a dmax