Port my own heads?

As it stands now I think I 'm gonna go with the M-1 with some mild porting and keep the 3.55's and take it back to the track with some good slicks and really hammer it and see how it goes. A little off the subject but this came up in a conversation not too long ago. Every small block I 've takin apart has always had a small plastic like gasket between the oil pump and block, Where can you get new ones of these? and what is the proper torque for the oil pump, also should there be a dab of loc tite on the bolts. thanks pete