Rambo Exploding Arrow Shaft - help

OK, we know that the 'exploding' tips for the arrows were modified Razorback screw-on tips.




I have been looking around to buy an (one) arrow shaft, and with the same feather 'pattern', as seen in this particular pic, so I can screw in one of the 'exploding' tips I have to make a display.





I have had no luck whatsoever.

Does anyone have any idea what kind of arrow shafts these were (brand / model) ?

If anyone knows where I could get them (or close-enough cheapos, no probs, so long as a Razorback will screw in), please illuminate me with a link

I think they were "Easton" brand, takedown arrows (with a spring) and it will be certainly difficult to locate some of them as they were made in the eighties....like Rambo's Hoyt bow !!!

BTW, I have bought a regular arrow from nowadays and the "exploding" head will fit and screw on a regular arrow insert...no problem with that

Thanks a bunch IFA, much appreciated