kz900 mufflers - anyone know what I've got?

I purchased this KZ900 Ltd back in September and am currently stripping it down to see what needs work (alot!)

I'm pretty sure my mufflers aren't the stock Jardines 'cause Ltdrider sent me a picture of his and the end of his mufflers are more closed in. I've never see a muffler where the internals are visible. Also can't figure out what those "hooks" are for that extend slightly past the end of muffler. I'm just trying to figure out if I'm missing something and need to purchase new mufflers or if I'm just looking at a type I'm not familiar with. I did start the engine a couple of weeks ago and didn't notice it being exceptionally loud, but I didn't really rev it up too much (I was just happy it started!)

Any help would be appreciated!!

I think the pipes are original or aftermarket Jardines, but the baffles are some homemade creation. No pipe had a baffle like that I don't think.

Thanks Ron, Thought they looked like original pipes. I just can't figure out what those hooks are for.