i guess headers get moved off my list unless i make a friend at a smog stop. from everything i could find, it seems that unequal lengths are kinda worthless unless you have a turbo or supercharger setup.</P>
i found the following on the internet from allfordmustangs.com. they used a stock 5.0 for each of the tests. Hopefully it will help someone down the line.</P>
oh, has anybody come across something like this for a 4.6? apparently the 4.6 reacts better with 1.5" tubes as oppsed to 1 5/8". at least for stock and lightly modified applications</P>

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