Power steering brackets

either drill and tap those holes in the block, or go to a 68-75 long water pump setup. the PS pump hangs off the water pump, and on some cars the adjuster runs from the front exhaust manifold bolt down to the motor mount bolt.
the only trick might be mounting the alternator if you don't have the hole drilled in the passenger side head.

it's easy to make a spacer to hook the stock PS bracket to the header- just mock it up and cut an old alternator spacer down to the right length to take up the space and use a stock exhaust manifold bolt on the front of the header.
what style of long water pump do you have? the early 68-75 pump has the pivot hole for the PS pump drilled all the way thru and is the cleanest looking and easiest to adjust, and the 76-87 pump has the hole threaded for a different pump bracket setup that's more complicated and uglier. the mount for the upper alternator bracket is in a different place, as well- i think the later version has that boss farther back than the older version, so the upper alt bracket is different, as well.