Column shifters screwed

Alright, just got a call from the shop; they couldnt fix the slop in my 3 on the tree A903, they said the column needs to be rebuilt. So it looks like swapping to a 4spd is my only option (cause i cant find anyone to rebuild a column for less than the 4spd). What will i need swapping from a 3 on tree a903 to a 4 on floor a833? A833 is from a slant 6 truck. Or are there any other transmissions that will bolt up without swapping much?

From what ive gathered, the trans comes with a slant 6 bell housing, trans, and floor shifter, and the a903 and a833 are the same dimensions so i can use my drive shaft and should only need to cut a hole in the tunnel. Anybody have any experience?