Should I do this now?
The app should stop you from jumping ahead. Check the action before you buy, cut, or unbolt.
Remove the bedRemove the cabBuy wheelsFinal paintStart the engine from the original tanksFirst startFirst driveBuy interior or chrome now
Start the engine from the original tanks
Do notDo not attempt to run an unknown engine from old fuel tanks.
Use a clean temporary fuel source only after oil, rotation, cooling, and wiring have been checked.