Yes the skunk2 wont work with the swap. the skunk2 manifold runners are just massively long. It's about 1.5" longer then the jdm and usdm h22a stock manifold, definetly no room for it. Plus on stock to semi built engines the stock manifold has seen it's gains. The skunk2 manifold wont even work with the EG/DC H22A swaps, again too large.