Basically ill explain my situation and if anyone could help would be great and many thanks in advance,. Basically i have a mk6 2003 Fiesta finesse and trying to put a 2007 1.4 fiesta engine in it

, apart from the obvious bit such as steering rack needs to be changed im almost there. I am debaiting thou what would i need to do with matching up clocks to ecu etc as the 2003 has standard clocks and the 2007 electronic. I dont want to have to change dash and loom etc if i can help it so does anyone know a way round this please or any advice.. i.e if i put engine in and keep clocks the same as original 1.3 and ecu original could i get it working or use 1.4 ecu and 1.3 clocks if someone looks into ecu and makes adjustments etc? PLEASE HELP! ANY ADVICE WOULD BE GREAT...