| # | Entity | Status | State |
|---|---|---|---|
| 1 | 14 618 546 204 WILLIE CASSIDY MECHANICAL ENGINEERING PTY LTD |
ABN Active | NSW 2133 |
| 2 | 86 635 709 287 WILLIS ENGINEERING PTY LTD |
ABN Active | NSW 2660 |
| 3 | 97 008 898 931 WILLIS LIGHT ENGINEERING PTY LTD |
ABN Active | WA 6106 |
| 4 | 18 940 440 373 ULRICH THOMMEN WILLYS ENGINEERING |
ABN Cancelled | QLD 4870 |
| 5 | 35 349 071 270 CHRISTOPHER ANTHONY WILLIS WILLIS ENGINEERING |
ABN Active | NSW 2658 |
| 6 | 64 423 866 729 MITCHELL WILLY TRUST MITCHELL WILLY ENGINEERING |
ABN Cancelled | WA 6058 |
| 7 | 35 349 071 270 CHRISTOPHER ANTHONY WILLIS WILLIS ENGINEERING |
ABN Active | NSW 2658 |
| 8 | 13 125 886 811 FISHIT PTY LTD LITTLE WILLY RACE ENGINES |
ABN Active | VIC 3041 |