SN2008D requires a strongly inverted ⁵⁶Ni profile, with the external abundance of X_out = 0.71 in a layer that reaches the surface; in this case, the progenitor model is He5 with E_exp = 1 foe. The late LC decline is reproduced when passing from a fixed κ_γ = 0.03 cm² g⁻¹ opacity (dashed line) to half this value at t >  40 d (solid line). Lower panel: evolution of the photospheric velocity, although we did not use observational velocities to constrain the model. The velocities of the photosphere are taken from Tanaka et al. (2009b).