A few questions
I know alot of these have been covered I read some of them Seeing if any new ideas out there. First my truck is an 05 screw 5.4 Gotts mod (homemade version) flowmaster catback, leveling kit, helwig air bags. I tow trailers weighing 4500 to 7000 lbs weekly. My first question i have been considering headers any opinions are they a good investment? Brand recomendations? Next true duals versus catback is there any advantages? tuner any suggestions? shocks? Thank you in advance for your help
My dad used to have an 05 5.4. His first mod was a magnaflow catback, k&n intake, superchips tuner, 4.10's, and eventually jba shorty headers. After a year of modding with all the parts the headers made the biggest difference in his eyes. He said low end tq increased and the sound was beefier.

