F23 swap question (Page 1/1) PatrickTRoof FEB 09, 03:33 PM Those of you who have done an F23 transmission swap with a 2.8 or a 3.4 engine, what did you do about the issue of the Y pipe covering up the fill cap on the transmission? Thanks, Pat mcguiver3 FEB 09, 05:28 PM I beleive the F23 fills from the side of the case. Left side of the trans.