There are a lot of threads about the ebay intake manifold. It's a cossie knock off. Same exact part, just crappy quality. They require work by cleaning the inside of the runners and some people have said that their 'top plate' doesn't line up. Some people have said that theirs turned out pretty good after all the prep work.
The throttle body... um, I don't know what to say. 90 f'n MM!! That's way over-kill. And anything universal won't work on our cars. Keep away from that unless you like playing the money exchange game.
Yeah, I's gots me some mods.