looking for very specific diffrences between 2000 type r head and gsr head
taking on shifty dealership.

 

if you want to leave your head stock (which is good enough to handle most cams) get the type r head, if you wanna do head work go w/ the gsr head cause the intake side has better air flow...

this proves the gsr head makes more hp:
http://www.importreview.com/d_1.8.html

 

p73 or PR3 (can't remember, i'm thiunking pr3 for some reason) on the 00 and 01 R heads, p72 stamp on the gs-r's.

 

PR3, P30, P73 = B16A
P72 = B18C

 

You must have missed out on exactly WHAT a B18C5 is.

B18C5 = B18C block + B16A head.

Technically you have a P30 head. Its stamped 30 by the distributor.
Older heads are stamped 3 for PR3.

Also, did you know that your B17A has the same head?

 

If the same P&P job was done on the GSR head, it would make more power than the factory P&P B16 head. The GSR has oversized intake ports (i could be wrong). Have u ever notived that Supercharged GSRs make more power than supercharged ITRs? Its true, its damn true. The air that comes into the the GSR combustion chamber goes straight down, when air comes into the b16 head it has to make a couple of turns. Thats the reason for the P&P job. The GSR head is a blacksheep for some reason. U put a gsr head with ITR valvetrain and cams with some work done to the head, on an ITR guarantee u make more power (also due to the smaller head of the GSR, resulting in higher compression rate.