A904 rebuild - boosted W2 408

oh and you may need an assortment of different thickness retaining rings for the drums in order to get the correct clearance for the clutch packs , I was fortunate I was able to mix and match the thick front clutch's and steels with the thinner rear ones to get 6 instead of 5 in the front while also getting the optimal clearance there , plus I got a thick set in the rear to get the right clearnace there while beefing that pack up as well . Get to know a reputable vendor / builder they will be able to teach you a lot .