http://www.ebay.co.uk/itm/Alloy-Water-Tank-Filler-Neck-Cap-Radiator-Intercooler-Motorcycle-Bike-/271087903026?pt=LH_DefaultDomain_3&hash=item3f1e192132 Could i fit this instead of a e36 rad and aftermarket slim line fans. As i have cut the mounts for my bottle and want to try to run the standard fans.