I got some more info today folks....
Yes,
The 4.0 adapters are available in three stages:
1--fully machined, welded, with bolts, nuts, idlers, tensioners, belt as the highest level ($1495).
2--welded, with idler pulleys/mount, throttle cable and idler bracket, but nothing else ($995)
3--just the adapter plates & unwelded brackets ($499).
For a shop the plates are best but for someone who has no heliarc capabilities the first or second setup is best. All that is needed for the complete setup is the Nissan/Eaton (used on ebay $300-$500), FMU (new on ebay for $100), Boost & a/f gauges (new on ebay for $100/set), and inline fuel pump (87-92 Ranger frame mounted unit is a perfect fit--$125)
This allows someone to have a kit that is nicer looking than the BBK was for $2300 or less. With a little patience and luck someone can do it for $1000 if they have a welder friend.
Just so you know what is to be welded, the throttle body adapter has an adapter that bolts to the SC, and one that bolts to the throttle body. A 90 degree aluminum elbow must be welded to both brackets, and the throttle cable linkage mig welded together (a T-shaped bracket from two CNC cut pieces). The brackets are pinpointed for drilling, and the holes must be enlarged.
Hood clearance on the 4.0 system is not an issue.
You should have a return type fuel system, so a simple FMU and inline fuel pump is all you should need for the fuel setup. Ignition is not a concern at 5 psi.