The 93 motor is basically the same as the earlier ones, with the exception of the oilpan, timing cover, front accessory drive, and the lack of the hole that the older Stang's clutch pivot ball screwed into. Change the oilpan (and pickup tube) to the older front sump pan, and either use the serpentine accessory drive system for the alternator, P/S pump and A/C compressor or swap the timing cover to the older one and use the accessories that went with it. Also you'll need to remove the 93's oil dipstick tube and plug the hole in the block and use the front dipstick and tube from the older timing cover. If you have a std trans and clutch linkage, you'll need an adapter bracket to mount the clutch pivot ball to the block. Many of the classic Stang suppliers sell this bracket. As for the ignition, there's several ways to accomplish that. The 93 will have a steel roller cam and will need a distributor with a steel cam gear. If you're going to use the EFI, then you can just use the EFI dist. If you choose to go carbed, you can get a points dist. and change the cam gear on it to a steel one, or buy an aftermarket dist with the steel gear. If going with a points dist., you can replace the points with a Pertronix unit to get rid of the points.