Uhhh, I don't think this is a good idea at all. First, it's already been pointed out that the SN manifold is more restrictive than the Fox body's. Second, your going have to do too much work to make it fit. Why not just hit the local junkyard or Ebay to get a stock upper. At most it'll be $50 and a hell of a lot easier to install. Use ye old heads here.