STI advise

[e34stx]

Hi everyone, first time post, so hi!

i’m after some advise so please bare with me. I’m looking at buying a WRX STI, either a bulb or a hawk, I intend to do a project build over a couple of years but I’m unsure to get a uk or jdm spec. The car will be used for fast road, maybe a little drag and the occasional track day. I see the jdm has forged internals etc and appears to be a stronger engine. I read through the performance guides above, do these guides also applicable to the forged jdm engine etc?

thanks for your time.