I have them. There not bad. If you have a welder. Gotta weld the x-over to the collector and rear header. Then pull the TB, EGR, and Master Cylinder and rock the engine forward to get that thing in. Also get better gaskets the ones that come with it are junk.
on my set the front header was going into the tranny at a horrible angle. I had to cut it back and re-weld the flange on. Horrible fiasco!