I have A 1983 Jayco popup.It has surge barkes but the master cylinder is shot.The wheel cylinders are also shot.Was wanting to know if it would be cheaper to replace these brakes with electric brakes or if you can change them over like that.Last time we went camping in the North Carolina Mountians I had to take the brake pads off one wheel because they were draging so bad.The hub got way to hot took them off no more problem.Just that I know it has no brakes at all!!