| Model Code | Description | |
|---|---|---|
| 01 | 421.122, 421.130, 421.810 | WITH OPEN CAB |
| 02 | 421.123, 421.131, 421.820 | WITH ENCLOSED CAB |
| 03 | 421.124, 421.126, 421.128, 421.132, 421.140, 421.162, 421.810 | WITH OPEN CAB |
| 04 | 421.125, 421.129, 421.133, 421.141, 421.163, 421.820 | WITH ENCLOSED CAB |