For that exact reason... was hoping to find something for less that has had good results. I went with the Walker in my 37, as they literally were the ONLY company to offer a bolt-in radiator for that truck.
I know a number of racers using the Griffin radiators with good results...but Griffin has many different levels of radiators. I don't know that the cheaper ones would work as well.
I've used PWR in some offroad projects... wasn't happy with them, had leaking issues over time.