Flaming River Column Placement

Anyone have measurements for how far out from the dash the steering wheel should be placed?

Took the old column out of my 68 Barracuda before getting the bright idea to replace it with a Flaming River column. Of course, I now don't have any measurements to work off.

I attached some pictures of it mocked up with approx 3 inches of column extending through the firewall as Flaming River suggested. Feels like the steering wheel is a bit closer then the original column when I sit in the driver's seat.

IMG_20180621_224020.jpg IMG_20180621_224042.jpg IMG_20180621_224226.jpg IMG_20180621_224302.jpg