Ok, here's your update.
Starion's motor started knocking, so I looked for a new DD. Found this Danger Ranger, needed a motor. I was in desperate need of a DD, so I put the motor from my BII into this Ranger. Been driving the ranger for a week now, it's awesome. And yes, that is a newer plastic intake manifold on my '90 4.0. The runners are much larger than the aluminum ones, I noticed a difference in where the powerband is for sure.
So, I have a BII without a motor, and a Starion that needs a new bottom end. I am also about midway through building my new Cafe Racer. I think I am going to put the BII on hold until I get the Starion and the Cafe done. Then Im going to probably sell the Starion and get started on my FIAT.