stuttering & skipping

[stang4to8]

tried all tune up stuff, still has same prob. would 02 sensors or tfi module cause this?i even installed a msd6a & blaster coil.20 sensors have 98k on them but sat in my basement on a shelf for almost 3 years before i did my 5.0swap. eng comp., wiring harness, fuel lines all have 98k on them but were also seperated for almost 3 years.did swap the weekend of 9.1.02[COUpLE OF WEEKS AGO}after i got car running, had a major surge so i set tps at.98v, cl upper intake, t.b.,egr spacer[NOT EGR VALVE}cl. idle bypass solenoid & repl all upper intake gaskets also reset comp & reset idle---now it idles alot better, cl 10 pin conn{ mine has a fac. modified 10pin conn for both black & white connectors-so i cl. both ends of connectors. please help, my car idles good but bucks while driving-as of lastnight i pluged in my speed sensor into the speedo gear assy & test drove the car with same prob, but speedo never worked anyway. should i keep driving car to see if all clears up. HELP....SORRY SO LONG