| Model Num | Machine S/N Base | Machine S/N First | Machine S/N Last |
|---|---|---|---|
| 6120 | |||
| Category: Bulldog Hydraulic Kits -> International Harvester -> Excavators | |||
| PC128 | PC128UU-1 | 1001 | UP |
| Category: Bulldog Hydraulic Kits -> Komatsu -> Excavators | |||
| PC120 | * | 30001 | UP |
| Category: Bulldog Hydraulic Kits -> Komatsu -> Excavators | |||