Originally Posted by qtiger
If you're going to be upgrading the engine the ONLY drawbacks to getting a GSR engine instead of a Type R are: Intake manifold, and transmission.
The intake manifold is a minor problem, thanks to the Skunk2 manifold and similar R copies made for the P72 bolt pattern.
The GS-R trans is also a minor inconvenience, as you can drop in a number of LSD's and change the final drive gear (ex: a JDM Type R 4.75) if you like.