I recently purchased a 84 f-350 with a 351w and I am totally restoring it. I am wondering what the best exhaust system is, w/o cats. I want a low rumble when ideling and a crazy mean sound when I really get on it, so people know when they **** me off. Glasspack... flowmaster... strait pipes... something else????

 

I have a 351w too! My setup with a 3" Dynomax Bullet sounds pretty much like you described. I love it!
http://www.angelfire.com/ne2/ray21_f...max_bullet.wav

If you want louder, here's with no muffler:
http://www.angelfire.com/ne2/ray21_f..._nomuffler.mp3