2014 gt no start fuel coming out exhaust

[Sdrxnospony]

Just bought my daughter a 2014 mustang gt. Was a little hard to start when cold but once warm fired right up. Test drove and started multiple times. Brought it home and now won’t start and is over fueling so bad gas leaks out the headers. Changed crankshaft position sensor already but not sure where to start looking now. Thank you for any ideas or advice. Was modified very poorly. Straight piped and no engine lights are on or pending when I scan it.

 

[Sdrxnospony]

Updated… checked all injectors no leak downs. Changed number 1 injector due to that tube having gas leaking out as well at collector when trying to start. Checked all coils for voltage and spark. All driver side plugs wet with gas.

 

[Kev555]

I would have suggested no spark but you confirmed there is, Just to confirm the fuel is leaking out from inside the exhaust headers? On which side or both?

 

[Sdrxnospony]

Just the driver side collector. Thank you