KO3s with KO4 interals basically an EO5, old school choice of turbo for the Ibiza, very poor reliability.
not sure on inlet though, think David, who is the only person i know running one went 3" but i think even the forge ibiza tip might have been ok since intake housing must essentially be a k03s???
just to throw a spanner in the works, what about nitrous?
Cheaper than a turbo upgrade and ALOT more fun/power
Link to ballistic power please!
Whats wrong with a proper k03s hybrid?
Havent there been some reliability problems with the gt2x long term use. I thought some of the guys on vortex were having some issues.

....what's a proper k03s hybrid?
am04 is unobtainable
jbs04 is over priced