This engine has only been on the market for a short time so you may have trouble finding a used one,but if you can find one you will be very happy in that set up.The 82 is very light and has tons of power.I have two of them and love them both.As far as how long they will last is better measured in hours not years and would depend on how much time you fly every year.If a Saito is well cared for they will give you 100's of hours of use.