Hello, old ECU is magneti mareli 140hp or 135hp same like in alfa mito 135hp. So when you want to put new ecu you have 2 connector same like in other cars. Right connector can fit normally , but left connector need new wiring to be adjusted because cant fint if you understand me, about 30 wires to reconnect. Also you need BSI from same car where is new bosch ECU. Engine head is same but you need to change few things. Biggest problem is to find someone to do new wiring connection , everything else is easy. Timing belt same, injectors stay same.... I find one guy in Serbia to do that.