So, after removing the Alternator (rumbly bearings). Decided there was no point finishing off the engine bay 'till the alternator is refurbished.
Been thinking of extending the areo at the back, so decided now was the time to experiment.
Only have basic hand tools. Made templates in card first then transferred to aluminium sheet.
Took a bit of time to cut out the basic shapes, a few pics of how the mock up looks on the N/S.