Thanks for the replies. I've tried the other layout but its no good as it rubs on the timing belt cover, also as mentioned the tensioner doesn't work with it like that. I've been researching it and it seems I have two options: First is get the proper non ac layout by getting an alternator mounting bracket from a non ac engine and refitting the alt and ps to it. Second, buy a new oil sump and ac compressor and fit it so I can fit the belt as intended.