Hi there, Old School. I've got a 55 Effee also. I am like you and your plans for the 54 (Power steering). Boy these things steer hard with any big motor and the current box in mine is looser than a goose. Stay with it on both of yours. These trucks can be tons of fun.

PS. I lived in Bonney Lake (east of sumner just off of 410) from 90-99.