Thanx for the info.
I can't afford a vtec head for the moment, as I'm in Turkey and these old parts are still expensive here and not found much since the Integra Type-Rs were never officially sold in Turkey.
I already have a small T3 turbo running at 15 psi with almost stock elements.
I bought a T3/T4 turbo and will use this turbo at this setup for 350-400 HP setup.
I have 440cc injectors, arp studs, acl race bearings, etc.