Not to necro-thread and may create my own if necessary... but I've recreated the Corvette ZR1/Sport/NS steering adapters in CAD and am looking for online quotes for running a batch.
If anyone is interested in participating in the obtaining these adapters let me know.
I'm currently creating quotes through emachineshop.com, finegrainmetal.com, and RapidMachining.com. If anyone knows of any reputable online or local machine shops around them to engage with that are friendly to automotive hobbyists, please let me know.
Also have instructions on how to create the steering rack bracket from a single piece of 3"x3"x1/4" square steel tube. It's a little overkill but keeps the complexity of the bracket to a minimum...
Steering rack bracket
Contour gauge and angle finder on crossmember
Bracket cut and ground out of 3" square tube
[This message has been edited by msweldon (edited 11-12-2018).]