I was wondering what would be the best muffler/exhaust kit for the 4.3?

 

no such thing as the best, depends on what you're lookin for, mild-extreme, throaty, hollow, raspy, poppy etc... if this is for your ride i suggest youtube and checkin out that famous searchbar feature of the forum..

personally i like the chambered sound for 4.3s, the problem is that its a v6 and no matter how hard you try it will not sound like an 8 like everyone wants... check out the cherrybomb extreme or a spintech muffler also, they both have a real nice sound