As I said in PM, that's definitely a roller-rocker SR20DE, not an SR20VE. It doesn't have the solenoids, doesn't have the IACV in the same location as on the VE, and has a roller-rocker throttle body. It also has an Infiniti valvecover, and although the roller rocker valve covers fit the VE, it's unlikely anyone swapped back to it.
Also, in the album, you say the header is a Nismo one, but that looks exactly like an OBX/SSAC/eBay one, so I don't think it's Nismo. In fact, I don't think Nismo even made headers for the FWD SR20.