Due to heavy snow and salty roads my exhaust is deteriorating on my truck. This means that come spring ill have to probably get a new setup. I like the sound of my glass packs but anyone have any pipe size recommendation for optimal back pressure and performance. I don't want to go too big or too small with it. Also any ideas as the where to exit it would be welcomed as well its the K2500 in my sig 5.7 engine true dual with dual cats. Thanks!