Welcome man, I took the muffler off of my 84 GMC when I was 14, but I had tons of space to work with on that. My best advice is to be careful and don't screw up.
And as Collinoflcp said, if you want a mean sound out of a V6 go with headers and a cam but if you lack mechanical experience you'll definately want someone with experience there for the install of those two parts.
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"What if I told you insane was working fifty hours a week in some office for fifty years at the end of which they tell you to piss off; ending up in some retirement village hoping to die before suffering the indignity of trying to make it to the toilet on time? Wouldn't you consider that to be insane?"
-Steve Buscemi as Garland Greene in Con Air