Went to replace the starter in my 74 TypeLT Z28 which was the original one to my special ordered, I am the original owner. I ran into problems finding a new build Power Master- retro series which turned out having a alum. nose vs a steel nose which is the original Delco starter has. The alum nose measures 80mm across vs 70mm which is the diameter of the hole in the bellhousing dust cover. I ended up finding a steel nose remanufactured Delco which fit perfectly. I'm planning to rebuild my original Delco unit 1108418 as time permits. My question is did all 74Z28's have the steel nose starters and did the 350 (non-Z28) get the alum nose ones?