I doubt you'll have any issues with the manual box/column. My issues were the steering coupler was going to hit the back tube. I fixed it with a Flaming River B-Body tilt column kit that comes with a u-joint and the column allows for 3/4" of travel
I have not driven the car yet as I'm in the finishing stages of a TKO swap. I installed the heads myself. I bought them bare and had Mike and MRL build them.