Im looking into headers for my 83 Trans Am. I am probably looking to buy shorties. I saw a set from Dynomax for $140 in Jegs. I am wondering: 1)Are these any good?
2)Do they include the Y-Pipe? If not can I use my stock one or do I have to get a custom built one?

 

I have the dynomax shortys on my 83 camaro, they are from summit and are ceramic coated. They did not come with a y-pipe but they are hella easy to install.