Different Speedway. Try looking up Speedway Engineering. I'm pretty sur that's who I bought tube and arms from. There's a couple of other sources as well, but that's a good one. On the '67 to 72? K it should work out in the stock mounting locations. Probably also for the early K. My recolection is Project V uses a 73 K which had a sway bar through it more like the kit cars did.

The hard part is getting the arm angle bent. The nice thing is once done, the geometry is set. Then changing rates is a matter of swapping tubes to different wall thickness.

Mine's not installed, its been on the todo list for too many years, but other stuff gets in the way (priorities).