Okay, now for a little detective work. As you look at the speedometer unit, you'll see the problem. The Chinese gentlemen who built this used nice big electrolytic capacitors. Five of those installed right on the back side. And those two black things sticking up are microswitches...one of which controls the Mode (basically a selection mode for trip/reset/etc) and one of which controls the led lights (which we will not be powering). And the red and white connector plugs probably will be in the way. And finally you'll see an oval-shaped crystal. That might be in the way. We'll have to see about it. But the good news is these are pass-through connections and I suspect we'll find when we start removing the capacitors that we can flip them over and install them on the front side. And the better news is it seems all but one of them will fit (just barely...there will be about 0.5mm to spare between the top of the capacitors and the top plate.). I think one of them will strike the data display window and so we will have to lengthen the leads and mount that one laying sideways. Once that's done, I believe the thickness will be ok for the OEM case. If you look through and into the center, you'll see a black tube. This I think is to allow the special leds to channel their beautiful light right up to the dial plate.
That is about as far as we can go at this point, but more will follow later.
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end