84 Toyota Exhaust Question - 2wd pickup

Hello.

Thanks, first for taking a second to answer my post.

I have an 84 2wd pickup, and I recently saw the same model with some sort of tuned exhaust on it. I am wondering what options I have as custom exhaust on my truck, and what kind of difference in the truck's performance those options would make.

If you have time to answer, please do.

Thanks.