1. USE original driving axles and training arms from SuperBeetle.
2. 1" narrower per-side.
1. Spring plate templates: cut the original BUS spring plates.
2. Spacer templates : between spring plates to training arms.
3. Training arm to chassis templates : drill 4 holes on the chassis to install the big pivot nuts.
4. Big pivot nuts for the training arm templates: require machine shop to make 2 unit. use original M14x1.5 bolts.
5. Pivot nuts support plate templates .