I'm thinking that the newer 1-1/2-tons have about the same G.V.W.'s,as our T.F./Blue-Chip 2-Tonners. With this in mind,your brakes should out-perform the origional M.C./hydrovac,as well as the safety net of a dual reservoir. The added residual pressure valves just adds to your thoughtful insight,and really "Doing it right the first time"! Again,Congrats on a JOB VERY WELL-DONE!! Thanks for answering my questions!!