318 magnum HELP!!!

I bought a 318 magnum with about 100,000 km or 60,000 miles, it was in a dodge ram and I'm putting it in a dakota so it required changing the oil pan. the engine ran well with good compression and fair oil pressure (about 12psi warm) didn't smoke or knock. pulled the oil pan and found about a 1/4" of metal filings in the bottom of the pan as well as long narrow pieces of metal (reminds me of steel wool) I think I got ripped off even though it sounded good and tested alright, don't have the money to rebuild it so I guess I'm going to have to run it for now carefully I paid $200 and had to remove it myself