I was wondering if Its possible to swap an 08-12 ninja 250 front break caliper on to front of a 07 ninja 250

I was wondering if Its possible to swap an 08-12 ninja 250 front break caliper on to front of a 07 ninja 250

Is that because it's broken?

no just something I was wondering if it could be done

You broke your front break caliper?

90% certain you need to relocate the EX250J caliper somehow for it to fit onto the rotor with the EX250F swingarm.

If you wanna do this, why don't you also upgrade to the EX250J swingarm, wheel and the EX250J (or Ninja 300) rear suspension? Direct swap from what I can remember. Everything besides the wheel is relatively cheap.