Engine My Foxbody Firing order is different

[General karthief]

I have a 88 SD WHICH COMPUTER SHOULD I RUN? DA1???

Without knowing what you are doing that you think you need a different computer that would be hard to say.

 

[Mustang5L5]

I have a 88 SD WHICH COMPUTER SHOULD I RUN? DA1???

5 spd or AOD?

is the wiring original to the car? No motor swap or 4cyl swap? All original 1988?

it matters