it's' totally possible the fbody maf was damaged beyond repair when the screen contacted the wires. they're really sensitive. you could totally use the wrecker maf if you wanted to just recalibrate your maf table for it. you should also datalog and see what kind of AFGS you're getting when trying these maf sensors out. if you have an old datalog, you could easily compare aganist known good maf calibrations (you should get similar airflow for a particular MAP x RPM from a 'known good' log)