HDK Tubular Coil Over for Stock Steering

When it comes to design and we all are starting from a base product ( the car) apart from a few differences in design.
It is a fact to achieve the same goal the design will almost certainly look similar to others.
Being in Australia no- one makes any kits for coil over conversions here.
I have been looking at my own design but just for me.
My design is not too dissimilar to either designs.
However extra holes and welding is something I'm trying to avoid.
Even drilling through the frame rail behind the k frame is not a good idea.
The steering box on Aussie cars are mounted
by three bolts through the rail here and you do see cracked rails from time to time.
Anyway it's a free world and, I thought competition was a good thing to help improve ones product and reduce price.