It is a long way down the injector inlet and you will find the injectors will wet the sides and will effect the spray pattern a little. (we tested this mounting location) Also you can use the Mercedes 190E 2.3 16v cam buckets which fit with no modifications, are heaps lighter and made of better material which will match you new retainers nicely. What pistons/brand did you use? are they an off the shelf item or did you have them made?
How much bigger did you machine the throttle bodies? I went to 40mm which gets thin in places but I believe made all the difference. It looks like you are using some old milano injectors, which are ok to get you started but aren't quite big enough and you will have to have your fuel pressure wound up to 70psi to get enough fuel for the top end. If you are going to all this trouble contact Summit Motor sports and get a set of matched Bosch - Ford Motorsport injectors. (I can give you the part number) which will run at a more respectable 40-45psi. They are very reasonable for a set of being around $225 from memory.
I too wanted to run the standard air box to retain the classic looks under the hood, but found it necessary to enlarge the 2 main air inlets as it was causing a restriction causing a loss of power. (I'm not sure you can tell from the picture)
Where are you mounting your crank sensor? I found it the place with the most room to be on the front pulley... see picture.
Best of luck with your conversion.
Here is a picture of my setup.... And yes I'm trying to get a black dizzy cap from MSD, the bright red one looks out of place.
1975 Montreal - Race prepared... Mean and Green.
1999 166 3.0 V6 - Daily Driver, 1989 75 2.0 TS Turbo IMSA project car