Blake the choice as it stands is either DC or SPAL, now the large fan (exhaust side) as I measured is around 14inch, now the 14inch DC fans don't fit. As they are too fat.
So it appears the decision will be to go with the SPAL slimline fans, as you can get up to a 16inch size fan thats still only 52mm thick

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Bigger fan = more flow, given the under bonnet temp on the exhaust side I need as much as I can get.
More then likely I'll order through supercheap as I think there open on thursday nights which means if I try really hard I may just get this thing to the dyno day

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