I tried to find some info in the FAQ's about switching my 3.08 to a 3.55 or 3.73. Will both/either of these require a new carrier? I am sure the 3.73 will but I have found both yes/no answers regarding the 3.55.

For my information - would the 3.73 ring & pinion be too big for the thm 400 with a 400 motor? (IE rev to high at 60mph?)