I've read about the supra pump method, but have yet to see it implemented. If you're doing the brake upgrade on my write up with the bigger rotors, you want the 13WH calipers, PN 19-2766 and 19-2767 off the O'Reilly's website. I chose O'Reilly's because I wasn't sure this was gonna work out and I wanted a potentially easy return. Seeing that you have an 06 & 05 LTD, chances are you already have the 13WL calipers. The 13WG calipers are found in early 1st Gen Sequoias (01-04) and have been superceded by the 13WL calipers.