theres a few jobs that need to be done, oil inlet feed is 1/8 but gas thread i think so needs taping to npt, comp housing needs drilling and taping to 1/8 npt. what is it going to be fitted to ? on a cossie needs a 20 mm spacer to clear the head and an rs500 wastegate housing, rst needs 5mm spacer to clear the manifold but wastegate housing is a direct fit its standard 5 bolt configuration.