I`m wanting to know what i need to do,change to convert a 2005 BA XR6 to turbo?

For what it will cost to convert you NA to Turbo and being an early BA, sell it and buy a Factory Turbo.

Don't wish to offend but unless you are overly in love with you car it is the better and cheaper option.

Sell it and buy a BF XR6 T.

If you still want to convert yours to turbo, buy a wreck and transplant the parts, this will be your cheaper option to doing the conversion and you will have all the parts on hand.

http://www.ebay.com.au/itm/FORD-FALCON- ... 3a9824cdfd