Is it ok to use a 5945 for steering in a 1/8th buggy?

What servo would you recommend to replace the 5945? I am not familiar with non-digitals with comparable specs. Also understanding I am running a 25pound model 60+MPH and it has to be as safe as possible. To have a front brake servo failure at 50MPH would almost certainly result in major damage to my car, at the least, and anyone around it at the time at the most.