Add in carmods.dat:
vigerovl, exh_vigerovl_a, exh_vigerovl_b, fbmp_vigerovl_a, fbmp_vigerovl_b, misc_a_vigerovl_a, misc_b_vigerovl_a, misc_b_vigerovl_b, nto_b_tw, rbmp_vigerovl_a, rbmp_vigerovl_b, rf_vigerovl_a, spl_vigerovl_a, spl_vigerovl_b, spl_vigerovl_c, wg_l_vigerovl_a, wg_l_vigerovl_b
Otherwise ModLoader can load this txt and do it for you.