Sorry to hear about the car...its always a bummer when it happens to you. If the car is in good shape aside from the motor, engine swap is a solid idea.
MPS autosalvage in winder GA specializes in stangs. Years ago, I got a low mileage 2000 4.6L PI engine to put in my tbird...cost me $1800 and had everything on it. their website has a lot of stuff to fill your xmas list with.
or you could get this:
MPS Auto Salvage, Inc. - Products - Engines - 2004 ROUSH S/C MOTOR - SUPERCHARGED 2004 ROUSH STAGE 3 4.