old thread but i just came across it and wanted to put this up
14750-p73-003
14751-p72-003
14761-p72-003
14765-p30-000
14775-pr3-000
12204-pr3-305
12205-pr3-305
14721-pr3-000
14711-p73-joi
Those are the parts numbers for the 97 and 00 Integra Type R head parts
(they are a set of inner and outer intake valve springs, the inner and outer exhaust valve springs, retainers, valve seat, valve guides intake and exhaust and then valves exhaust and intake)
I am sure you see some familiar nomiclaiture pr3/30/72/73 and if I put more parts up you would see others but no need for that (main bearings are also pr3). The head revability of the Type R is pretty much all in the valve springs, the ability for it to breath are in the intake manifold which has short/wide runners, its intake valves, throttle body and fuel map, the rest of the parts are basic dohc vtec parts found in the Si also.
So if you are trying to replicate the Type R rev range safely all you need to do is go to the stiffer valve springs oem or aftermarket and get a valve job or replace and reseat the intake valves on a B16a 3rd gen head and then tune to make it breath up there with the oem cam or a tuned street cam. Of course if your other parts are worn replace them.
The Type R is over rated much like other things in the Honda world that seem to have this mythical fog of misinformation and fish tales surrounding it. You can tune a b16a to hit harder than the b18c5 but then again you can tune a b18a/b or b20 to hit as hard without going hybrid also.....