Red Headed Stepchild-75 Swinger LSX Swap

Well I returned my radiator cap and got a new one so no more coolant leak when she gets warm, so now I'm back to trouble shooting the ignition/electrical system. Checked out all the wires except the ones to the ignition switch and the switch itself. I'm losing 2 volts going through everything and figure out where this is happening.

Also making my lists and costs for either rebuilding the slant and switching over to a 4 barrel carb and intake setup with a cam and some headers, or whether or not I'm gonna dive in hard and just do a bone stock 5.7L hemi swap into it. Any advice or opinions on which 1 to go with?