I'm looking for some LT headers for my 04 Silverado 1500 2wd. Anyone ever used Doug Thorley Headers. If so how did they fit and any issues installing?

PN/ that I have found is THY-310-1-C. which is the 1 3/4" primaries w/ 2.5" collector
PN/ THY-349-1-C are the new model which is the 1 7/8" primaries to a 2.5" collector

I prefer ceramic coated. Any insight on any decent set of LT ceramic coated headers that fit decently?!

 

I had the 310 series on a 2001 Yukon, installed them myself without too much difficulty. The Yukon was set up for towing an enclosed trailer and they worked great in the 2000 rpm range and up. Did the trans work--shift kit, vette servo and billit 3-4 servo and it could hold it in OD at 75 on flat surfaces and slight grades.

 

I'm getting ready to purchase the*THY-310-1-C, looking forward to some mid rpm gains