Changing head unit in Megane 2004

[7alidzy]

Hello,

I'm new to this forum so bear with me if I make a fool of myself!

I have a 2004 Megane Extreme and it has a crappy cassette player head unit. I've been reading about adding Connects2 - VRNX001 and having an AUX port in the car. I'd appreciate any help answering the following:

- will the same solution work for my cassette head unit?
- Is there a solution that offers Bluetooth hands free for making phone calls as well?

Thanks in advance for all the help!