xtraflyer,
It fits like a dream! The needles point down and the chokes pull from the bottom, there is even room for them to slide up and down inside the cowl. No extra cutting of the cowl was required except two small holes in the bottom for the choke rods.

Now I sure don't have the DA 50 power so I'm gonna try some different propsI hope it helps. I'm used to flying my DP Ultimate which flys a lot more nimbly. I have to get used to the weight of the GP and the speedier landing characteristics. I do like the difference and the change. Change is good!