HI WOOPEEE you live again after ignoring me trying to resolve this matter with no reply from you ,,,If i did do a swap then would my original l1 ecu board even fit in your l6 case or be the same layout?? or work with what ive already got, Please please my friend stop the dodging and excuses , you know full well that the reason ive purchased an l6 was due to an upgrade not due to fault with my car ?? my car has run perfectly well for 25 years on its original ecu and went to MSD for tuning and setting up after much profesional work and it ran perfectly well on their l6 just days and zero miles before i purchased yours that is what the car has just been set up to run on not my original 3 door l1 ,,and that the truth is the ECU you sent me despite me asking the questions to be wary of was blatently faulty/ unsatisfactory now your just dragging it out /trying to shift the blame mate