You're lucky your junkyards are so "reasonable".
Haven't been able to drive the Z cuz the starter went out, but at least I can drive the daily with one hand.
For $140, why not buy a whole engine, part it out, and use a bare block as a mock up so you can build the other one up while you get the thing mounted in there?
It's about $500 for a VH here from a u-pull-it...
Mario