Forum;
That is a strange exhaust header indeed...clearly designed by someone how didn't care about access to the Filter-on-Block...maybe it was intended for racing, with a remove Filter/cooler setup making access not necessary.
The old intake looks like an "A" intake for "less than high-performance" configurations (including Agricultural!)...now that your engine can breathe well, I hope you installed a Cam and other items consistent with that...
Cheers
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