[2006 Legacy speaker install help please & hello!]

Hey Club Sub members,

greetings!

As my first post I'd like to ask for some advice...

Just as a preface, I'm great with IT & computers, cars and audio electrical, not so much...

I've recently bought a 2006 Legacy Wagon (B-Sport 2ltr).

Sadly, it came with the factory Kenwood head unit and factory speakers.

I bought one of these yesterday and installed it without a hitch: http://www.jonvy.co.nz/index.php?route=product/product&product_id=4447&search=subaru

It works really well. I generally just play music/podcasts from my phone, so it's perfect.

I opened up one of the front doors next to check out the speakers.

They're the horrible looking cardboard factory jobs.

I have a couple of cheapish sets of 6" JVC speakers I've had sitting round for a while I want to install.

I believe I need these: http://www.hyperdrive.co.nz/product/speaker-spacers/706/no905-universal-spacer-6/151234/detail , as the factory speakers have their own attached plastic spacer thingie.

They also have the factory plug that connects to the cabling that goes back to the head unit.

I have a couple of questions:

- are those the correct spacers? They look to be the right size, shape to me. I'm guessing I may need to drill a couple more holes in them to fit the speakers perfectly.

- How do I go about wiring the new speakers in to the plug currently in the vehicle. Does anyone know of a place that sells an adapter?

As you can guess I'm not 100% confident in this, but I do want to learn. And I don't want to pay a car audio place to install when it doesn't appear to be that difficult.

thanks!