http://www.ebay.com.au/itm/Kinugawa-Billet-Turbocharger-2-4-TD05H-18G-Blow-Off-Valve-8cm-T25-Housing-/271193968995?pt=AU_Car_Parts_Accessories&hash=item3f246b9163 It shows the port.
I've been there dude, and i had a rb20. I know the extra price of a 25 box, modding gearbox mount, vl turbo/z32 yoke, speedo sender and modding tail shaft seems like a lot but it does pay for it self.
97 R33 GTS-t Rebuild engine in 2005 with forged pistons and gtr rods. HKS 2835Pro-s Turbo HKS hi-power super silent exhaust. Twin 2.5 inch to 3 inch front pipe. 3" front pipe Trust R SPL intercooler Trust adjustable exhaust cam gear Z32 AIr Flow meter Nismo Fuel Pump Nismo 555cc injectors Nismo fuel regulator Apexi PFC + boost controller Tuned at 17psi