you can use the old pan unless its cracked , be careful in removing it and it should be ok. the factory bolts should work too. the gaskets might or might not be needed, if youve had the heads milled , the thick paper gaskets might not work, then you could use just the pan and sealer, or maybe a real thin paper gasket. ive had this problem before on an engine i dont know anything about and its trial and error as to how thick a gasket i could use .