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· Member
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Here is the stock 73 GT headpipe next to a 75 FI headpipe.
The pipes come together about 8 inches further back on the
75 FI.

Take a look at this thread…http://www.opelgt.com/forums/showthread.php?s=&threadid=1029&highlight=headpipe

You may wish to have a custom headpipe fabricated. One that puts the collector further back. I don’t know if this really will help low end torque, just throwing out an idea.

Is head pipe one word or two? Oh, and note the much coveted
FI exhaust manifold. :cool:


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