Header and manifold question

[Jtrux]

Okay, yesterday I went to install my hedman headers and it was a no go. I think they may have put the wrong part in the right box or something because they couldn't be installed because they kept hitting the shackle and they came down way too low. I had some others that came on it originally but I tossed them but they came down perfectly (don't recall the brand). Anyways, do you guys prefer manifolds or headers and if you like headers, which ones?? I don't remember the part number of the ones I have now. Also, I'm not pushin out all kinds of power here, roughly 260 so manifolds will work fine i'm sure, but the problem is finding them. LMC has them for mucho bucks but i'd like to find some good used ones. I just want to drive my dang truck!!!!!!!!!!!!!!!!!!!!!!