So Ive installed the new Kit and Head unit

For those that are interested here are some pics and my opinions.
The original Unit:


I used the Kit fron JapanParts
https://www.japanparts.com/parts/detail/14777 Model A-C Single. Total cost around $350 AUD for part and shipping to Australa. Arrived in just over a week.
I used a Subaru to ISO Wiring Harness adapter from supercheapauto for $15
I made the mistake of buying an aerial adapter because i didnt realise there was one included with the fascia adapter kit from subaru, but it was only $13
The Head unit is a Sony XAV-612BT which i bought from JBHIFI matching the ebay price of $435 (compared to their normal price of $600)
I am very pleased with the head unit, It has plenty of inputs (BT, 2x USB 2.0 ports, 2x AUX inputs) aswell as mirrorlink which i find quite useful and in general the unit has a good interface, customizability and all the features i could want.
The Final Product


I put an AUX input and USB input wire acces into the centre console and sealed hole with a gromet from hardware store, fits nicely.

Hope this helps someone, Happy to answer any questions.
Thanks,
Scott