heads

I'm interested in building a NA-T set up. I have a "obd1" 2jzge from a 1994 SC300 and want to build a turbo kit for it. Is there exhaust port and stud differences between OBD1 OB2, vvti and non vvti heads? for example can i fit a VVTI turbo manifold on my Non VVTI Na head and so on