Accessory Bracket Confusion
the long L shaped brackets with a bolt hole on each end, mount from the bottom of the trans to the block, one of the triangle brackets are for the alt. the bottom hole shares the bolt with the long adjuster bracket you already have mounted, the bracket with 2 bolt holes and a big hole mounts on the intake, drivers side rear, for the throttle cable, and the hose to the brake booster runs thru the big hole, it looks as if you have a few different engines worth of brackets there, so it will be trial and error to match a set up, I hope this somewhat helps you out, I don't know how to post pics on here, but if you im me a cellphone no# I can send you pics of my brackets.
Mark