Ya, making them myself, i just like doing stuff to my on my own, i've been let down by too many shops to deal with them anymore.
Basically, for build, just buy the ls1 flange, buy lots of 90 deg elbow, and some straight pipe and weld them all together, i'll probably send them off to get coated as well.
I'm not sure on what size pipe i need for the headers, but i'll call around and find out, i'll probably just use the same size as slp or hooker or whatever.
the headers should cheaper than buying some, plus they'll fit perfectly.
later,
allen