Do you know if you have to dedicate 2 homelink buttons - One for on, the other for off? My exhaust is finally going to be here Tuesday.Back on the project today... I'll try to highlight differences from @Draco-REX 's great write-up. I also bagged the remote switch unit that was included. I sourced this this one for under $30.
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It is reasonably sealed and has 'on' and 'off' buttons and yes, it supports Homelink! I also got black vacuum tubing here.
I decided to tap the manifold vacuum after the check valve like this so even under boost the valves will work off the vacuum reservoir:
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