[Zeke]

If you send if out chances are they won't want to do a partial repair. You've gotten this far, why not do it yourself? You need some specs for torque and clearance for the new piston although the generic .0025-.0003 should work. If there are no signs of damage to the rod journals and they mic to fairly close tolerance, bolt the one rod back on the way it came off. I'll guess again, no more than .0015.

You should try to look at the valves and seats too. Now there's some tools the average guy doesn't have, valve grinder and seat cutter. You may need some help there.