big block installed measurement needed

I've heard of the spacer trick to give more clearance under the hood. I have a 68 Dart, /6 to RB Schumacher conversion mounts and TTI's (440-2) with a 440.

The headers are awful close to the steering box........I might just try the spacer to get my headers farther away from the box.

My measurement from the carb stud to the vertical lip of the cowl is 14" and the distance from the stud to the engine side of the core support was 25.75".