Can anyone tell me what a 2.8L v6 would sound like dualed out or give me any tips to make it sound good.

Not as good as a V8. Really not that good, and you probably won't like it.

You might want to run a single exhaust, with a spliter in the muffler so it looks like your running dual pipes.

Actually I have a 2.8 V6 with single flowmaster 40 ser, the timing is advanced and it has a bigger cam, it rather sounds really mean. I get a lot of comments of it and most people assume it has a 350.

What if I ran straights from my catalitic? Do you think that might sound ok?