Looking forward to seeing the 93/WMI, thank for all your posts on this already and any more to come
NOTE! Please do not install the WMI tank in the rear of the car unless you put it in a well made sealed enclosure, pump included.
Reason, get hit in the rear hard enough to crush the tank, WM all over the inside of the car, not a good thing, toxic and still somewhat flammable, perhaps and air bag could ignite it, just being the toxic stuff as it is being enough reason I did the below.
I decided to be creative and built in three separate enclosures into the tire well then put tops on all three then a hinged lid for the left over cargo area. Doing this from working inside the car took a huge effort, 100 hours possibly but I have a lot of cargo room saved, lower weight for a bit better CG, etc.....If I ever did something like this again I would just cut out the majority of the well, draw up and have a square enclosure with walls inside as needed, flange on the sides, cut a hole and drop it in, even if if cost a few hundred or more it would be worth it (I would do the whole thing myself if my tools were available, most are all locked up ion storage now though)
I did move the washer pump to the WMI tank in the rear so no washer bottle up front.
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Alt method, if not worried about the weight bias which is not a huge amount, use the washer tank up front for the WMI, mount the pump, I could do the install in 3 hours or less including wiring, etc....
Again, looking forward to the results
Rick