what to do is this even legal

[Gino Cook]

I bought a house for $63000 7 years ago I owe $51000 now and value of home went up $10,000 since I bought ..its a owner finance my friend owns house will appraise for $84000 -$90,000 should I try to get a mortgage for the $90,000 ?  and then get the left over money my friend has after paying off his loan ? my friend is 100% for this since I got him outta a jam and took house over let me know what u think