I have just swapped a GSL rear end into my car. I have also swapped the larger master cylinder and its proportioning block. Bled everything and went for a test drive. The rear brakes lock up before the fronts, which are new. So, I picked up a Wilwood proportioning valve and I am looking for the best place to mount it. It looks like it would really easy to install it between the master cylinder and the stock proportioning block – will that work? Will it mess things up? Where do you suggest that I mount the new proportioning valve?

Thanks