Are you looking to get yourself accused of bankruptcy fraud ?? Do you understand that this loan you intend to co-sign for MUST be included in your bankruptcy ?? Do you understand that if you do so, the creditor is likely to challenge the discharge of that debt and could get you accused of fraud ??? If you are accused of fraud, your case could be thrown own. At the very LEAST, the debt would be deemed non-dischargable and you would be on the hook for it !
Suggest you tell your friend to find another co-signer.