Steering column clearance to headers

I went out and measured the engine location on my
homebuilt k-frame.
Surprisingly it is the same as shown in this photo I found while looking for the tti spec's. I believe this photo must be the guide for engine placement using the tti headers?
There really isn't any room for much deviation from these measurements with the hooker headers I installed. I would expect the same using tti.
I consider it nearly a miracle that the headers went on my car at all when I seen how close they are. But they did with only needing little dents to clear the torsion bars.
I built my frame before the days of tti without any measurements. I went off of photos I took of a few original cars mounts I took at at a car show. The engines were in place blocking any real view of the entire frame. I didnt even have a pair of headers yet to check the fit with and had to make my own brackets to weld to the frame. I based them off a B-body Hemi k-frame. The reality of it is it is a lot easier
to do than it is to explain or write up a how to.
I did have to spend a lot of time researching and fabing brackets to weld on that can be bought today.
An 1/8" clearance is about all you can expect to have at the torsion bars and rear of valve cover rail on the driver side. The larger 2 1/4" tubes that are available today are much tighter than the smaller tube headers these cars were built with at Hurst.
If I wanted to replace the factory steering coupler with a swivel. Or dent the #5 tube a bit I would not have had to move the steering box over at all.
I would never expect the same fit from car to car,
frame to frame, brackets to brackets or block to block. It doesn't take much difference between two of the same part to get a stack up of tolerances within these parts combined to use up the 1/8" clearance that these cars generally have. I consider every install
a custom fit to the car.