ECM: 90-91 Firebird TA & CamaroTo be 100% sure.. we ask you Indicate the YEAR MODEL and Engine Code Type on checkout and we will ring and ask if you can.. to check your ecm's service parts number.. its a sticker on the outside of the ECM box.. THE ECM .. is the cars electronic brain. We've EVERY V8 & all V6 ECM's from 1990 92 IN STOCK ready for immediate dispatch. ie next day. To Purchase please call us 02 42571230 and have your VIN the number located on the LHS as you look though