I just installed 2-1/4" downtubes, no cats, flowmaster 15100 resinator & cat back system on my 95 sc auto. I must say, it sounds like crap(my friend says it sounds like a cow when i get on it). I knew it wouldn't sound like a v8, but I didn't think it would sound this bad! Its also WAY too loud when you get on it. I really dont want to put cats on it, but if anyone thinks it will quiet it down & make it sound a little better, please let me know. Also open to other suggestions. Thanks