[HiImBrian]

Their o2 housings are well worth the money. You sound a little unsure about the o2 housing. If you look at your exhaust mani, there is a little cord that goes into your o2 sensor. This sensor goes into the o2 housing. As far as exhaust mani's go. Keep your ported 2g. Tubular manis are nice, but they tend to crack and/or get really hot sometimes. There are lots of threads on here that discuss this topic on dsmtuners.com