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I have been following your progress, and nice work it is.
I assume you have removed mudflaps so the air kicked up by the tyres are channeled to the narrow gaps either side, I remember reading that you dropped in an inner seperator using corroplast sheet to try keep the air from the tyres seperate to the underside until it exits at the rear.
Mine is a wagon, but the lower end is much the same except I do not plan to go as low as I need to maintain some offroad capability but there is already an existing natural channel between the outer line of chassis and the body overhang which I may utilise to do something similar, but the centre section will be closed off in much the same fashion as you have done.
So I am assuming your recent mpg improvements from 23.5 to 25.5+ are primarily due to the rear wheel improvements, yes?
Mine sits around 21 and I'd like to get up to 25, but with the boxy rear, gonna be hard without throwing a major boat tail on it, but that would then kill any offroad capability.
I will do a small Kamm/Boattail and see how that goes, still thinking about and following threads with ideas of easily removable/colapsable/inflatable units.
Keep up the good work.
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