Chassis notch will defo be needed!! My drivers side drive shaft was catching on coils so going even lower will defo need a notch.
Air is great for practicality but you may aswel have it low when parked up so no point not notching it!!
Hockey puck mod is a cheap alternative to raise the engine if worried about the sump! With air unless you will e dragging the underneath around at full speed the sump should be plenty safe enough. On coils is defo a different matter
