I have a 99 mustang convertible that was cobra engine swapped by a previous owner. 6 speed manual trans. I daily drove the car for a while. I parked it in my garage for a few days and then experienced a crank no start. Have gotten the car to start and drive a few times but the issue keeps coming back. Have gotten it to start with various pats "fixes" such as cycling key and a magnet. Has fuel pressure and a working fuel pump. Has spark. New ckp, iacv, plugs/coil packs. Any help would be...

1999 Mustang GT cobra swap crank no start.