I just bought one of the non sfi approved and put it on my small block roadster. Very easy to install, of course I have no crossmember to mess with just motor plates. It has four straps running up to the header bolts and one end has a strap running horizontally to take up any slack front to back. I am very happy with it and the buckles are very easy to release the straps when I need to change oil. With shipping it was 164.00, cheap piece of mind I believe.
Curtis