| Part | Thunderjet Chassis(TJET) | Thunderplus Chassis(T+) | Johnny Lightning Tuff Ones Chassis(JLTO) |
|---|---|---|---|
| Gear Clamp | JLTO fits loose. T+ is too short. | TJET & JLTO are too tall. | TJET fits is tight. T+ is too short. |
| Idler Gear | TJET Gear plate will acept T+ and gears bind with JLTO. | Smaller gear locator, can use TJET or JLTO. | Can use TJET or T+. |
| Gear Plate | JLTO will fit, but drive gear shaft does not line up and will require chassis to be altered. T+ fits well. | JLTO will fit, but drive gear shaft does not line up and will require chassis to be altered. TJET rear mounting tabs and drive gear shaft do not line up correctly. | TJET rear mounting tabs and drive gear shaft do not line up correctly. T+ drive gear shaft does not line up correctly. |
| Magnets | JLTO magnets are too large reqiring chassis to be trimmed. T+ fit loose. | TJET & JLTO magnets are too large reqiring chassis to be trimmed. | TJET & T+ magnets fit loose. |
| Motor Brushes | JLTO fit well. T+ fit loose. | TJET are too large. JLTO fit well. | TJET fit. T+ are loose. |
| Pick-up Shoes | JLTO & T+ fit loose and could be bent to prevent them from coming off. | TJET & JLTO fit well. | TJET & T+ fit well. |
| Pick-up Shoe Springs | All springs are interchangable but may alter handling of the car. | All springs are interchangable but may alter handling of the car. | All springs are interchangable but may alter handling of the car. |
| Front Axel | JLTO & T+ fit well. | JLTO fits well. TJET fits tight, but not much. T+ is tight in most samples. | TJET & T+ fit well. |