sm465 th350 swap

[theside00]

been searching for a while trying to find some hard evidence and must be searching for the wrong thing but my question is how much work would it take to switch a th350 4WD tranny to a sm465 4WD tranny? This will bolt up to a 454. I know about the clutch linkage and all that stuff but I am wondering about special bell housing needed or if I have to change output shafts or not. The sm465 had a 208 attached to the back so I shouldnt have to change shafts to fit the 205 on there? Any info on this will be helpful and sorry if this is a repost or subject that has been beaten to death on here (new to the forum)