Ok so im having a problem with this extra mission. i have shin at lvl 50, rank 4 parts for destiny, f91, zz, master, wing zero, each with the parts attachment armor gain, hard strike, pressure hit, and drives ex. hexa drive to increase the damgae of thier charged shot num 3,4,5, ex..., and every time i get my butt kicked by musha and musha Mk 2. Is thier any strategy to take those two out? help greatly appreciated.

if it helps you any I flew around w/ Heero lv. 50 in a Wing Zero all maxed rank 4 parts w/ Sniper, Pointblank Shot, Biocomputer, Hexa Drive and something else on it and the skills High Tension, Customize and something else again. I was in the red most of the time so my SP gauge kept recharging, and I kept hitting them w/ my hyper SP attack untill i somehow killed them and won