timing the same for headers set up? lack power?

I tried taking pictures today of the mufflers but didn't work so well. I'll try again tomorrow. I did get a couple of pics that came out alright.

I forgot to mention that the muffler system is Dual mufflers. they are coming out of each tire's side as seen in picture. Does it affect its performance. I am also still using the same old carb. I haven't bought a new one yet but will soon.