I have been gathering parts to convert the 302 in my Galaxie to EFI.  I built a MegaSquirt ECU 5 or 6 years ago.  I also gathered up the modern upper and lower EFI intake but I don't think I have clearance between the top of the modern intake and the hood so I am planning to drill holes in an edelbrock performer intake and add fuel injector bungs (already have a nice set of rails).  I was trying to find a throttle body but they all are big $$ so I decided to take the modern throttle body and adapt it to look like a carb, use a carb air cleaner and mount to the edelbrock intake.

here is the foxbody throttle body and a 1" square bore spacer






I started by drilling a vacuum port.  I drilled out a 1/16" hole all the way through, enlarged it to 5/16" wide 1/2" into the spacer and then drilled two more 1/16" holes at an angle




I then used a homemade tool to create a perfect thread


here is another shot of my tool


As you can see from the gasket on the spacer, the throttle body is about a perfect fit on the square bore


Another shot of the vacuum port and port holes


I then marked and drilled the holes for the studs.  1/4" holes and 3/4" deep so they didn't go all the way through.


I once again used another home made tool like before, I call it a “square tap” as it makes the tap square to what you are tapping as you use it.


Once threaded the studs went right in.


installed gasket


Throttle body looks right at home on the spacer and will fit nicely on my intake.