Guess I'll be the first to say it....

If you've already lost 1 piston, do you really want to do a half-a$$ed repair? Odds are you'll be tearing it apart again real soon.....

Yank the motor and rebuild it completely.

 

believe me i want to do that but..
im in college and not that much money right now or anywhere to really rebuild it. everybody that ive asked to help wants a bunch of money just to help. Just dont have friends here like I do back home. If i was home it would be no problem and Id have a new motor stat.

 

Agreed with SeriousOffroad, if one broke you are taking a bit of a gamble. Could well be another is right behind...or you could luck out as some do and never have another failure.
Since you'll have the head and pan off already, it's considerably easier to just do them all at once.
But if financial constraints don't permit, change the bad one, keep RPM's far away from the redline, and let the engine warm up good (so the pistons expand and reduce piston to wall clearance a bit) before loading it up.