Looking for a bottom end for my trx250r

[northsidelbz]

i had my trx250r motor recently rebuilt and the person who rebuilt didnt assemble it correctly and thus, ruining my tranny, breaking my case and probably messing up the crank from the violent vibration (from what the guys at trinity and my local shop told me)... im now looking for a new complete bottom end for my quad... do you know where the best place for me to look for one is.. new or used.,.
Thanks for your time
Levi Bessette

northsidelbz@yahoo.com