Cam & headers for VQ35DE

[sigman70]

(Note: I have this post in the R50 Pathfinders forum too, but got thinking maybe it would fit better in this one)

Hello all. I'm in the process of pulling the engine on my 2002 Pathfinder SE 4x4 auto (casualty of the power valve screw issue), and since I'm going to have a replacement engine I thought about upgrading the engine a bit. I already have dual exhaust and an intake, and since there aren't many options for this engine I thought about looking for cam and headers. I found a few links and was looking for opinions/suggestions on these or anything else you might suggest:

This is the cam I found:

http://www.4x4parts....mance-cams.html

This link is for a place that does custom headers, but is pretty expensive:

http://www.stainless...m/customheaders

I did find another option...I can't quite tell if this is considered a header or just a manifold replacement (it comes with the pre-cats on it and is supposed to be a direct fit), as they mention both in their description:

http://www.autoanyth...3A6725A0A0.aspx

I found a few other sites that have engine kits, but I think these would only be if you were looking to add a turbo...is that right?? Would there be any kind of gain you would get from just installing one of these kits? (again this is an expensive option):

http://www.importper...pek-nissan.html

http://www.rhdjapan....kit-vq35de.html

I did see the thread about Alfredo24PR and the turbo he did, but it seemed like he ran into problems with the transmission and since I also have an automatic, I don't think I'm looking to dive into something like that where it seems like you could be spending a lot of money. Looking forward to hearing people's thoughts...thanks!!!