Yes, you're right, power and dimensions wise, but weight, since this kit was designed back in the days when Fuji and Zenoah engines had a magneto for ignition and weighted actually more the a DL-50! And no, of cause I don't want to yank out firewall out of the plane that was designed to fly around engine with 1/2 the power, so I was thinking to bash this kit to made it to accommodate larger 50CC brute. So if you going to build fuse next post some pictures, I'd be greatly appreciate! And good luck and best wishes with a build.