Thanks Jerry & 1bad32, ah no, I don't want to burn pistons or blow out head gaskets! Thanks for the pic's, when I said 1 breather, I meant 1 per side. And I found some that I like the look of... So 1 per side it is... Or does a bigger motor, more boost, etc. mean you should have 2 per side? My motor is a 392 w/ an 8:71 on it. Just under 600 HP w/ under 10 pounds of boost (so I was told). It's set up as a street motor, not tight clearances on the blower. Actually it's a crate motor from Big Al's Toy Box... Thanks, Bill ; )