A bit more progress.
I will not weld this plenum solid until the material comes in for the runners. I have to maintain my ability to port match the runners to the base plate incase of any minor imperfections. Also I don't want to finish it off and someone want a different throttlebody than the factory one posted here.
Your throttlebody options upon ordering will be:
Miata 1.6L factory throttlebody
Miata 1.8L factory throttlebody
Honda 76mm throttlebody
Ford 90mm throttlebody
The runners are 2" od 11 gauge (.120 wall thickness) we port match your factory port to the size of the large runner, this does good for anyone who might have a highly ported head so now you have the flow of a larger runner at your willingness to port out your new intake manifold
Unfortunately Sam has to stop working on stuff for me for about a week as he works on more vises (those guys love those little things lol) but as soon as he is ready to pop the head flange in the machine and do the final operation (turn flange on angle and machine in injector bosses) I will be sure to let everyone know.
Now is the time for anyone in the Texas to start to contact me as I will need to do the dyno work and see how these things do, (unless any shop owners on here is willing to help us out)
This is why I prefer everything to be fully machined, the fitment is perfection ^^
Here is a nice reminder of what the inside of your factory plenum looks like ^ ^ \/ \/