| Part Number | Description |
| 852459 | CHASSIS ASSY POWER SECTION 13/64A FOX00 |
| 852496 | CHASSIS ASSY POWER SECTION 13/128A FOX00 |
| 8528550 | PCB POWER UP/ADD'L 32 AMP UPGRADE FM20/FO20A/22/ |
| 8528760 | PCB POWER UPH/MICROFIN II OPTION for FM20/FM20A |
| 911076 | RAIL/SLIDE PLASTIC UP & UPH PCB'S |
