I bought me a kit also. $19.95 Canadian. So cheap I bought two of them.
I plan to glue the pieces together, fill in the gaps with some icing, and colour match the paint.
In case I screw up something, I have a backup.
I also purchased a Metra single DIN adapter just to compare. Metra is considered one of the best when it comes to mounting kits. However, the kit for the Ridgeline sucks to the bone! Very poorly designed.
The American International kit is better. I am waiting for a Scosche kit to arrive.
I have two DIN decks, so the AI kit is perfect for my needs.
I am planning on using the lower dash faceplate for a DIN size centre channel speaker.