I have a jdm gsr that the manifold by itself would fit quite nicely on. Just did the swap and I'm parting out the top end of the old motor. I have a bare gsr head, full intake manifold, gsr cams, and springs and retainers. I used my current headers so I also have a jdm gsr exhaust manifold and down pipe with O2 sensor all for sale or trade. Let me know.