UNFORTUNATELY.... Diana from sales says these kits do not have the same thread that the FCB has. They apparently fit the standard 'wings. GRRRRR.
For $20 Advance Auto sells a universal stubby with 9 different thread adapters https://shop.advanceautoparts.com/p/...990%7CL3*15435
But I think we want longer than another 7" stubby.
Somewhere out there will be one.