Desertrat, if you think you like the hood and the back GTR emblem, leave it that way. If the wheel don't borther you, and in good condition, only replace it when you need to get a set of low-profile/lighter wheels...
You have a KA24DE engine. It has aluminum head, and iron block.Dual cams. mid-9ish compression ratio. very lean torque curve at mid rpm range. Great Natural Aspirated (NA) car ... very reliable.
Intake, header, and exhaust work will likely free up more horsepower and give you more ummph. Middleeast's gasoline are much better than US. Higher octane too... read around and you will learn how to make use of those gas
welcome to NICO