If you sign up for an account at shapeways, download the STL file for free and print yourself. Before Bidenflation they only cost $8.75 to print.Gen 2 throttle cable clips for the stud on the manifold. I'd pay $10 without a second thought. I bet you'd sell 50-100 of them in a couple of months when the word gets out.
Check out Dodge-Viper-GenII-GTS-Throttle-Cable-Clip-1.0 by ceokris on Shapeways and discover more 3D printed products in Mechanical Parts.
I just realized there's two parts in the STL.. If you're savvy in CAD, you can link the two together with a 2mm strut and it'll count as one part. That may reduce the cost to around $10-$12.