EFI Bung in head update

Your plan sounds like a solid triangular support for the shock tower. I'll try to get a photo of how my C-body does it. The inner fender is removable and curved. There is a fibrous flat material that seals around the UCA. I recall that B-bodies are similar.

Your teeth are plenty deep for pickup. If the sensor is only 200 mils away from the surface, I think it doesn't pick up, so probably that would be deep enough, though I have seen photos of Ford wheels that have teeth as deep as yours.

Mounting the pickup on a slant looks challenging, since there are few bolts to come off of for a rigid mount. Before you cut down a tooth, read up on the Megasquirt site. If you plan to use a Ford EDIS module for timing control, I recall that the missing tooth should be something non-intuitive like 50 deg before TDC. That will give ~10 deg BTDC spark for the limp-home mode. I set mine up on my 65 Dart SB, but it has been a few years now (search my posts), and I haven't installed the EDIS stuff yet, so don't know if I got it right.