[mlambrecht82]

I don't know about the stalling but I do know the answer to the bucking. It is your fuel pump. The REturnless fuel system mustangs don't like the 255lph pump that all the supercharger companies use. Something to do with the pulsing. Call Steeda and they will fix you like they fixed me. You need to buy either the '03 cobra fuel pump or have Steeda modify your baffle to fit twin fuel pumps in it. If I remember right $350 for the Twin Cobra and $400 for them to modify your baffle in to twin fuel pump set up. I did it to my car and it runs amazing. You will love it when the bucking finally stops. My car did it for about 8,000 miles until I got sick of it and decided to do something about it.
Both of Steeda's fuel pumps flow over 300lph so you will get plenty of fuel.
You don't know how lucky you are to find the answer to this question so easily, I searched litterally for months to get this fixed. Consider yourself blessed.
c-ya