Two recommendations for you;

Hills 4x4 in Castle Hill - Lot 44 Unit 24 Carrington Road, Castle Hill 2154, Phone & Fax: 02 9899 4240

and

A & J Automotive - 4/47 Third Ave, Blacktown NSW 2148, 02 8678 9078

Both are Jeep specialists and both are members of the club and great people too!

Good luck!
Dave