I found a 7746 ECM ( ACDW) at the local U-Pull- IT . The donor car was a 4.3L TBI 1987 Grand Prix this set up seems to be the same as a 1987 Astro Van with a 7747 ECM are the ECM's plug and play ? I would also appreciate some help With downloading Bin files, Can a PROM be burned from the data in the Bin's ? Thanks Don