Floscan Install - Never ending search for parts

[CurrentSea]

I tell you, installing a Floscan is not simple. You need special fittings, clamps, fuel thread sealant, filters, wire, diodes, switches, etc. I feel like I am a scavenger hunt to get all the parts needed.

Now I am all set, except I need a 3 1/16" hole saw. Started looking around and this is not a standard size!

Anyone know where I can find this?
Thanks!