Each of the engine mount brackets has a large #12 hole that corresponds to the hole on the stainless steel firewall. Should I drill these out while assemble the firewall or leave them alone until I install the engine mount. Van's manual doesn't mention anything about these holes in the instructions at this stage of the build.
Here is a picture of the hole
![](/community/proxy.php?image=https%3A%2F%2Flive.staticflickr.com%2F65535%2F48575686462_09f280ae04_z.jpg&hash=5fa3ef6702c2b5b3ca3db4307274307f)
Here is a picture of the hole
![](/community/proxy.php?image=https%3A%2F%2Flive.staticflickr.com%2F65535%2F48575686462_09f280ae04_z.jpg&hash=5fa3ef6702c2b5b3ca3db4307274307f)
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