Er, your local maintenance organisation that maintains your helicopter or do you not trust them with your issue? They are going to have to fit it if your existing one is U/S or will you do it yourself illegally?
Try these people for a source -
Aviall Australia Pty. Ltd.
453 Airport Avenue
Bankstown Airport
Bankstown, New South Wales 2200, Australia
Phone: 61-2-9791-0511
Fax: 61-2-9791-0102
Manager: Glenn Trewin
I would come and fit it for you - let me see
Quotation,
According to Champion 1 hour to complete the SB - AUS 250.00
Paperwork/Certification 20 minutes - AUD 85.00
Travelling - Return business class seat from current location AUD 12,500.00
Rental car from KSA to your location and return AUD 250.00
Travelling time 3 days at AUD 850.00 /day AUD 2550.00
Time on site 1 day (MIN) AUD 1200.00
Total AUD 16,835.00
Customer supplies the parts!
When would you like me to start?