Thanks for the confirmation lads.
Confusion was epic when I was checking, as I'm 100% certain Gen3's were four piece brake lines because of multilink rear end. Sadly looks like HEL don't really know. Even appears Gen Iv's are incorrectly listed as two piece rears. Only the H6 Gen4 listings are for four piece rears (six pieces total).
Ironically, I had the opposite argument when I had my Gen2 when I was at a popular race supplies shop in West Sydney, ordering a set of Goodridge lines. He was adamant I had four piece rears, I was adamant I had two piece.
He sold me the kit with two piece rears (GC8 kit) saying that if they didn't fit, I couldn't come and bring them back as I was going against his advice.
He was right though. I never ever went back.