[FrodoGT]

A "glass pack" isn't a muffler, its just a resonator to help change the tone of your exhaust and maybe quiet it down a bit. If you run A straight exhaust you'll hate yourself, and besides the fact its not legal it will sound like ass, also its loud as hell. If you do go with a riced out straight through exhaust though, do it right and get a resonator or two otherwise you'll sound like a couple cards stuck in some bike spokes

And they don't have to come out at angles, mine comes out straight.

There are also other options that will replace your factory muffler location and sound good, like magnaflow and some others. In any case a catback system would be the most economical way you could go about doing it right. But theres always just getting a nice High flow muffler and not reworking the exhaust system.