I have a nos full 5176 kit with the fuel pump and tb included. i was wondering if it was NECESSARY to run the included fuel pump with it. i installed it without with a 125 jetting and it took pooped took and pooped then my COMETIC head gasket blew. just looking for someone who has this setup or advice on it. i ran pump gas and just my in tank walbro 255 gph fuel pump.