Day 8...
So I went with Bipeman's idea and will run 10-32 rod through the engine, standoffs, box, all the way through the firewall. This has the added advantages of maintaining the strength of the firewall and allowing more adjustability or even changing the engine in the future.
After measuring a million times and cutting all the parts, make sure they are a nice snug fit. Temorarally clamp the box together and make triangle stock parts for all the internal corners. MAKESUREITASSQUAREALLAROUND.
I used 30min epoxy, and glued it all at once. Using my handy panes of glass, the bag lead and a few rubberbands. a quick check with the square let it set for a good hour.
I removed a sectoin of cowl ring to allow the box to fit against the firewall.....And voila...we hava box.
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I will pin the front of the box later. Now its time for a vino and movie with the family....
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