Not a clue. Maybe it's not the same pump. Check the part number. I don't know what part number mine is, but someone around here should know it.Better yet, you could call howell and ask them why it says you need the bracket. If you get the right Walbro pump, it will be a direct replacement.
99GS MT | Star Stage 2 | GC coilovers | HurriganeGS tie bars | Tokico Illuminas | 17x7 Enkei RS5 | Baer track brakes |+