your going to be happy with the 91 surpass in your Marie, just follow the break in instructions, and you will have a good running engine for a long time to come,mine will sit for months, I just fuel them up and they fire right up I like that kind or reliability.

I have a few projects going on now one will be the H-9 corsair I have in the box I am going to go with the OS in there as well.

its hard to get away from the looks of the MAS props they fit right in with a warbirds,I like the K series like this one http://www3.towerhobbies.com/cgi-bin...9&I=LXZ982&P=K they are pretty good for the price.