As Jack pointed out, this is sort of a hybrid arrangement. It is technically a 4-link as opposed to a 4-bar because the angles of the two bars are not parallel to each other like they are on a 4-bar. You have no adjustments on the forward bar mounts, so you can't try different angles like you could with an adjustable 4-link. The intersection that the two bars make toward the front of the car is the instant center of the arrangement and where this imaginary point is in relation to the center of gravity of the car will determine the characteristics of the arrangement so far as how the car hooks. If this is a street-driven vehicle, I don't think it's gonna make two hoots worth of difference where the instant center is placed, so long as it isn't under the ground or 20 feet in the air.

I do think that the ride and handling will be pretty harsh with this arrangement because of the lack of compliant material at the mounting points. It was obviously designed for purposes other than a good ride on a street car/truck. The track bar shown in the links Jack gave is normally used only in drag racing. Street cars usually use a Panhard bar or triangulated links to control lateral diff movement.