While I have the heads off, I am thinking about replacing the early 99 intake plenums with later model 3" ones. At this time, I don't want to replace the spider or any other plumbing. Question is this: Do the inlets fall in the same location on both, so that all I would have to find is a 2 3/8" to 3" reducing boot to connect the early 99 intake spider to the 99.5 intake manifolds, or is there more to it than that? Also, will the early 99 turbo clear the 99.5 intake plenums? I have heard that OBS guys had to do some BFH massaging of the intake plenum at the turbo to get it to clear.