mustangjuka

I recently bought a 87 mustang v8 5 speed but it dosent have any spark right now and I replace the module and nothing so I bought a new distributer and pick and still nothing...now the computer in the car now is out of a 88 gt but I think in 88 they had mass air but my car is speed density. I was wondering if it could be the computer or if there is some other common problem with thesee cars.