155z v2 hicomp piston failure.

I sold this motor and within 10 minutes of the new owner riding it the piston let go at high revs resulting in a conrod and piston disagreeing and parting ways forever, the barrel and obviously the piston are goners, as for the v2 head I will strip it down and check the valve seats and guides are okay and go from there, the engine cases will need to be split to remove all the piston debris and check all internals for any damage.