I've finally decided when I'm going to swap motors! (Nothing special.. Just a late 22r .030" over, rv3 cam, SBC Valve springs and retainers, and professionally ported and polished)

I have a few questions, nothing super difficult but Im trying to do this in a weekend!

Is there anything I need to lookout for?
What motor mounts do I use? I have 22r and 20r mounts
Are any plugs different? (oil pressure, water temp..)

I'm pretty sure I've got everything. I ordered a DUI distributor and wires, I have a clutch kit and flywheel, I'm going to use the pickup tube and oil pan off my 20r. Hopefully I'm not overlooking anything.