I have some o-rings for that which I never used.
They are for making the GT40 type cookie tray.
The o-ring fits into an aluminum, or better yet clear plexiglass sheet.
The o-rings sit around the throat of the velocity stacks.
I would recommend the clear lexan so you can see what's going on underneath.
The problem with this setup is it positively seals you away from access quickly under the sheet.
On the FI that is probably less of an issue than with the IDA Webers. Those you need instant access to the throttle linkage or else you are inviting a problem.
What problem? That is unknown. That is the issue...access instantly to an unknown or unforeseeable issue.
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