i just hacked off my mufflers on my truck because im putting stacks on it, and im wondering if anyone can tell what kind of mufflers these are. they where on the truck when i got it. i know its longshot that someone would know what these mufflers are, but i thought i would give it a try. thanks.

 

Those are glasspacks. Not a proper muffler by my standards. Is there anything left inside them?