Where does this electrical box go?

A screw hole by the speedometer cable on the fire wall... roger roger! Will look.
(Got a picture?)
Couldn't see jack in the dim light tonight.

The intake is a Weiand Stealth purchased from a member here. (Another thread is started in it.)
Carb will be a Edel. (AVS) Thunder 650.

6 pack coil bracket! I have one of those! Why didn't I think of that?!?!
(Don't answer wise guy! LAMO! )

Oh! Speaking of speedometer cable .... how does that get retained? C-clip in the cabin? I have a cable... & that's it ...

I have a few other things I'm forgetting about that I still get have to cross and get to. I have 99% of the car and it's small parts.

Johnny Dart, 4spdragtop, DesertRat

Thank you very much!