How to install:
Mount the ISO and run Setup.exe

List of DLCs:

dlc_christmas.scs
dlc_daf_tuning_pack.scs
dlc_dragon.scs
dlc_east.scs
dlc_fantasy.scs
dlc_flags_at.scs
dlc_flags_aus.scs
dlc_flags_be.scs
dlc_flags_bz.scs
dlc_flags_ca.scs
dlc_flags_ch.scs
dlc_flags_cn.scs
dlc_flags_cz.scs
dlc_flags_de.scs
dlc_flags_dk.scs
dlc_flags_es.scs
dlc_flags_fi.scs
dlc_flags_fr.scs
dlc_flags_hu.scs
dlc_flags_ie.scs
dlc_flags_it.scs
dlc_flags_jp.scs
dlc_flags_kr.scs
dlc_flags_n.scs
dlc_flags_pl.scs
dlc_flags_ro.scs
dlc_flags_ru.scs
dlc_flags_s.scs
dlc_flags_sc.scs
dlc_flags_sk.scs
dlc_flags_tr.scs
dlc_flags_uk.scs
dlc_flags_us.scs
dlc_fr.scs
dlc_halloween.scs
dlc_heavy_cargo.scs
dlc_it.scs
dlc_metallics.scs
dlc_metallics2.scs
dlc_michelin.scs
dlc_mighty_griffin.scs
dlc_nature.scs
dlc_north.scs
dlc_oversize.scs
dlc_pcg.scs
dlc_phys_flags.scs
dlc_pirates.scs
dlc_prehistoric.scs
dlc_raven.scs
dlc_rims.scs
dlc_rocket_league.scs
dlc_schwarzmuller.scs
dlc_toys.scs
dlc_trailers.scs
dlc_valentine.scs
dlc_vikings.scs