I had a Mico Leverlock on my old truck and our Rome tractor has one. The only draw back is if you have a leaking wheel cylinder it will release, but nobody wants a bad wheel cyl. anyway. A friend of mine had his "97 4x4 3500 roll down a hill from where it was parked when it was new. got the whole front end , oil pan, front axle, frame, radiator,timing cover, windsheild, I think it was about $16K to fix it but now 5 yrs an 180,000 miles later it is still on the road.