Would it work? Been reading the links that a fellow member found, could you run it on low boost? And use the z5 ecu? but in addition have standalone management such as Dastek? (Nat i'll Pm ya back tmrw using mobile phone atm, cant get to new message lol)

kash, the dastek is a piggyback, not a standalone!
But, for the boosted application it is an ideal setup.
You would just need the head of the b6 and start modifieing it.
Best you do a prot and polish on both the intake and the exhaust runners. (polishing the intake only wokrs on boosted engines! on a n/a it is contra-productive)
Best you would install double valvesprings, get the combustionchamber polished and then the steel multilayer gasket to match it to the z5 shortblock.
0.7 bar should be manageble.
Only the gasket kit for the b6 engine and the valvesprings should be a bit expensive. I have found a shop in Belgium that price those to 20euro/piece. (maybe should get the bp injectors aswell.)

The port and polish: boost need its space. The bigger the better. Due to the high pressure you dont need the intake runners wall for the gasses to mix. that is the reason why you would want to do a port and polish on the intake side. And since you have the head laying around, it doesn't mean that you can't work on it