I have this one, no idea who makes it, but it works great for me & loads of room for headers etc...
That's an Alston kit. They work well. They do (did?) a few variations of that including a fabricated upper a-arm that saved some weight and space as well.
I used theirs 24 years ago fabed top and bottom with Koni shock and Airhart brakes. Once I got bump steer and rack right drove straight and TURNED right. ton of room for full length pan and headers over the rails, 3” frame height and 4 link-wishbone, hook on snot. 1.21 60 at 5.60. Almost no weight transfer with a strut, have to rely on HP to rotate the car. 1000 hp and up a strut, 5-600 a-arm.
