... a couple of things to keep in mind:
Ozone bar flags onto one front line so what ever bar you use, it probably should do the same as originally intended. I'm sure the kite will work fine other wise but if you don't have the same you've gone away from the design brief so probably not fully guaranteed to work completely.
Height of Y point for the front lines. Ozones Y point for the front lines is right at the bar where as some like say the Core/Bandit is up higher about 4m above the bar I think. This affects the kite in that it can cause a bit of "icecream coning" (sorta like as if the kite is in permanent jellyfish and pinched in). It may not be obvious on the surface but I found this made the kite way less effecient upwind. Some kites like say North 4 line kites have a Y point really high where as the Ozone is much lower. If the kite was designed with a low Y point then it will work best with a low Y point.
Bar throw. From memory the Ozone bar throw is set length where as some brands eg North is adjustable so what ever bar used, should be set the same as the Ozone bar. If its too long the bar can never be rested on the stopper as it will depower kite so much it looses all power and falls. Pain in the neck when taking the hand off the bar with some tricks. With the set length bar throw like the Ozone, the kite is depowered just right even with the depower strap pulled fully.
Having said all that I'm sure the kite will fly just fine but if not the same as the original bar, it might not fly just so and you may get the sh!ts with it.
Anyway, hope this helps.
cheers,
Robbie