Steve, and Listers,
Larry's exhaust is a (very nice) example of an H-pipe crossover. A popular
modification on late-model Mustangs is to install an X-pipe crossover, so
dubbed because the pipes have 45 degree elbows immediately aft of the header
collectors, the pipes meet in the middle, and then have a 90 degree bend so
that they again separate at 45 degrees (relative to the long axis of the
car). This is supposed to give some slight performance benefit over H pipes,
but obviously is hard to do on an installation as tight as the Tiger's, at
least if you use production headers like Rick's or CAT's. If you were to do
up a custom header set where the collector exits were already aimed at 45
degrees inward, then you might save enough room front-to-back to get it all
to fit in.
http://www.ampperformance.com/store/bxpipe.htm
http://www.mustang50magazine.com/techarticles/4376/index1.html
Best regards,
Theo
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