OK, I spent a lot of time in the shop this afternoon, but didn't cut a single tube. After reviewing the measurements on the aforementioned thread, also, going over the dimensions on the attached website, I also measured a subframe that has both uprights and control arms but no diff. I knew I needed good overall lengths to make the halfshafts work well. So, after levelling up the lower control arms so that all four points were in one line, I came up with this. I am fairly confident in these numbers for the existing geometry. That being the case, I suck at Paint. Actually, this is the first time I ever tried to draw something in paint. I usually just sketch it up and give it to the CAD guys to model.
I then spent a bunch of time trying to scale the pictures on the FM site to come up with the Westfield geometry. I know I am close, but there were two good pictures and they yielded different dimensions, probably due to camera angle. I was able to scale off of the outer top upright bolts, so that gave me a large dimension to scale. I backed it up measuring a known size on the picture as best I could. The two pictures yield slightly different dimensions, but either could be right.
The first one here is probably the right one, as the vertical height is the same as the stock Miata (7 1/4") It also yielded exact even numbers for upper and lower spans between pivot points ( 23" and 11") so it makes sense.
The other picture yielded slightly different results (7 3/8" vertical, 23 1/2 and 11 3/8 horizontal)
I guess my question is, would someone be willing to run the existing chassis dimensions through some suspension modelling software, as well as the second two to see how they come out. I have no clue on such things. I am planning on a 6" ride height on street tires. Pan will be 1 3/4 below and I live on a gravel road so think I need the height.
Thanks in advance.