Yup. If you get lucky and find a turbo truck transfer case, you won't even need the 23 spline input shaft/gear.

You might need to adjust driveshaft lengths, budget for that too. The adapter adds a little to the transmission/transfer case assembly length.

If you go dual cases you need another 23 spline. You can live a little on the edge and use Marlin's new design 21 spline input, but if you are changing it, you might as well go 23 spline throughout and fuggedaboudit.

-Bill
'87 4Runner w/ '96 5VZ-FE, 'Red Chili II'
'97 Taco XtraCab 3RZ-FE, 'BlackBean'
TLCA # 13257, Rising Sun 4x4 Club Land Use Coordinator
"He who stops being better stops being good." -Oliver Cromwell