Mine is exactly in the order you show top to bottom. Bolt, big washer with rubber bushing, core support brace, lower bushing with metal sleeve, shims ( I didn't have a retaining clip), frame, smaller large washer, lock washer and nut. Shims are added as needed . One thing you need to understand the AIM in 68 has a lot of mistakes and relying on it is often wrong. For example if you look at the C60 AC section B1 you will see a 3 bolt top plate. Sorry nope they all had HD cooling with AC and a 4 bolt top plate. I see a non HD shroud, a 396 HD shroud and a SBC HD shroud but to the best on my knowledge the BB ad SBC with AC were the same. As far as the washers I had extra large washers left over and used large top and bottom but that was just me. However the bigger washers on the bottom will bend due the the frame overlaps in that area so the smaller thicker will help eliminate that situation.