Thinking of removing headers

[crawdad]

I don't know why, but I have never been a fan of headers. I guess I just like the way stock exhaust pipes, followed by a good set of duals sounds compared to headers. So, what did my new '85 come with...headers. Now I know you guys have different opinions about headers, but I am thinking of replacing them with the original exhaust manifolds. Only thing is I'm not sure about a few things. First off, this engine is a replacement. I think it came out of an early 90's truck. It is a VORTEC engine with the VORTEC heads. Would I need to get the exhaust manifolds specific to this engine, or are there other year models that will bolt up. This is a non-smog set up so would anything need to be done to the stock exhaust manifolds before I could use them. Thanks