as i ended up with no more room in the rear compartments ,i ended up making a side pocket on the port side and mounted the fuel system there ,after the first 2 hours il ditch the merc filters and run the racor with water bowl,the efi filters are .5 micron ,i had one of these units on my dyno for 10 years and never changed the element,the primer bulbs are under the coming.the panel needs a hatch and then trimming,i replaced the breather lines with aeroquip and all the fuel lines with no joins as it should be.