Center drag link, are they really $600? 1964 dart

Swapping a 64 dart to a 360 magnum from the slant 6. I know I need to change out to the v8 drag link but I'm not about to pay that much for one. I don't see why I can't cut and weld the part I got and and thinking about going that route. Saw one guy shimed the engine up but I don't like the idea of that.
Someone show him a picture of the slant and the V8 drag links he may already have a V8 drag link because he has a 64 and the V8 was an option, I wouldn't doubt some 64-66 slants came with V8 drag links.