1959-64 371 / 394 OEM spin on oil filter adapter. Will also work on all 303, 324 and early 371 engines by plugging one of four mounting bolt holes. $45 plus shipping. Item is located in Arvada CO 80002. Send a PM if interested.

 

Can you use the stock 394 gasket to 303 block and does their need to custom a new gasket thanks