My leaded windshield 997 porsche, reduces the sensitivity of the window mounts RD so a remote grill installation is necessary. The only one I am sure of is the escort. I wonder how that, I think it is the SR3, compares with like a V1 window mount. There is an aftermarket remote valentine unit put out by a company something like Prowler Alert. I called valentine and they don't support it nor were they aware of this remote installation. They don't have one and do not plan one.Ant idea how the escort remote grill mounts compares to a V1 window mount.