if u break it down...the only difference is the long rod going down..440 or 340 6pak?...3 piece or 1 piece.....on my 340 1 piece the part i bought was the long rod...the lever on the trans is the same...the accel bracket is different, i bought that...the flat rod to the carb is the same as a 2bbl, the pivot is the same as any other...a parts book will help alot...