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Also, I put them on a 7700lb Expedition, that was pretty slow to begin with.
I didnt think they weighed that much. My guess was more like 6000 pounds top.. You sure thats not the GVW? which is way different then the actual vechicle weight.
-Patrick
yes installing headers suck right side is easy left side sucks but it does flow alot better it revs easy and passing cars on the highway is easy i do have a catback and stock exhaust behind the headers( i cant wait to get my chip back )