Ok i have heard horror stories about oil filters leaking on a 340 with the part that bolts to the block using the big center bolt with washer. I put headers on and have to use an oil relocator for oil filter. I have people swear they have taken apart 340's that have never been torn down and found no gasket between adaper and block. I bought a new bolt with a teflon washer that goes on the inside of the bolt then a copper washer on the outside of the bolt and the big gasket for the adapter is there a trick to getting these not to leak any help appreciated.