This is really 2 questions and probably stupid ones at that. If you guys can't already tell by my username, I am new at this whole thing.

So I am making my first upgrade to my A15 engine. Last weekend I picked up a weber 32/36 carb setup from bert and I am planning to have it installed in my stock ute. (Thanks bert for the sale).

I was told by a work mate that there's no point upgrading the carb without also upgrading extractors and exhaust at the same time as it is like, as he said, "sticking your thumb up your butt and trying to fart at the same time" Is this true?

Second, is there any way for a newbie such as myself to tell whether my ute came with modified extractors / exhaust without taking the parts off? The thing sounds loud as hell as is.

Thanks guys.