You may be able to rig something other than the AD parts but it won't be easy. Your best bet is to get all the AD shifter parts from a parts truck, including the side cover of the tranny. The '55-57 cover won't work with the AD shifter. Don't forget the stud on the bell housing for the shifter bell crank.

I'm sure you know you'll need to change the rear end too.

This won't be an easy conversion but it is well worth the effort.

"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.