Pulley Alignment is the Bane of my Existence....

Not much help from me, but mixing LA pump/brackets/pullies etc with a Magnum block can be a pain in the arse! Looks closer in the last pics. I dont like the looks of that plate( or whatever it is( behind the bracket. Check Bouchillion performance they may have what you need? This is why I like stock matching stuff.
Good luck!