Hey how are you
The only way to know is to check compression and do a intake and exhaust valve leak test to see for sure before you tear it down,
another thing you need to know the cause of the belt breaking at 56k miles ,do you have other issue that caused it other then tesnionrs or betl, bearings, oil pressure etc.. before spending money on rebuild ,a used engine might be better option depending on existing damage
I would suggest a person experience person or at least don it before ,you tube is good:) ,but watch carefully all the steps on putting back together especially to make sure you are in time and check timing marks.
You are very welcome :)
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