I used a the one on page 16 in SSP catalogue and fitted a Fram filter under the near side battery tray . It seems well protected. By the way with this and a 1.5 litre deep sump I have had no overheating probs at all with a 2110 engine so personally feel an extra cooling system(fan etc) is unnecessary if everything else is up to scratch with the engine/tin ware etc. Just my opinion though, others may disagree.