Flowtech makes a good header! It's the same as design as hooker, made in the same factory, and owned by the same company (Holley) I got mine (ceramic coated even!!), with matching o/r x-pipe, for $330 with only 5000miles on them
i got the slp headers. they are awsome so far, had them for about a year.
gained great power at all rmp levels. im not lowered yet but things do hang a bit low. actually if you have cats, then thaey will prob. hang lower, mine do.
The kooks from what i was told (by them) don't hang as low as other LT's because they are more like a mid lenth header like bassani. I'd like to see a set next to soms SLP's to compare.