I have an 03' fe501e and noticed there is a nice spot under the seat behind the rear shock to mount an external oil filter. My friend has a 660R Raptor which has a small screw-on oil filter. I thought the extra oil / filtering flowing through the engine would be beneficial. So if anybody knows where to find a good quality external oil filter kit or oil cooler/filter kit at a discounted price, it would be greatly appreciated !!