Rebuilding engine

OK well i decided to rebuild my escort engine i picked this car up for 200.00$ it's a 1987 ford escort 1.9l auto white with super black windows no body flows.my plans were to drop a mustang gt engine into the car but i really don't feel the need to cut new mounts and so fourth so i will just rebuild it with. if any one has any ideas or sagestins to get me started i would br glad to hear them.