Looking to put a different exhaust on my 85 (nt). Has stock with cats on it still. Not looking for a non-fartcan cheapy type muffler. Plan is to keep the stock manifolds, build a new offroad y pipe & throw a decent muffler out back that doesn't sound like an elephant with a gastrointestinal infection all the time. Any sound clips of systems available? Leaning towards Borla. Thoughts?