Stick with the Unilite. Check to make sure it's the breakerless one, and check the coil. If the coil is part #29440 then you're golden, and eveything is compatible with a Hyfire box which would eliminate the ballast resistor altogether.
Brother, you scored pretty big on that motor! The intake, the ignition. Next I suppose you'll "discover" CJ heads on it.....

When you get it ripped down, if the rods are football head and any are salvageable, I could use a few.
Ray