here is something to think about ,,,in perfect world headers would be the same lenght ,but in a stocker there are many obsticals for header routing,,, equal lenghts vs bends ,if all bends where flowing with each port (like a dragster) that would be ideal but not the case
i have a customer that i altered his headers from something that was a almost a nascar set up,real nice set ,craftmanship second to none but almost didnt seam like they would be big enoungh we changed to a convetional 4 into one, results will be determainded ,i have done a few sets for my car to where i thought big was better ,,but down sized collector and stepped the header and picked up 3-4 hundreths (not alot but actual ) there is power to be had,when dyno testing bring a few sets of headers or collector sets ,,,,
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