I just destroyed a TF Streak, the sub par aspects are the build quality of the fuselage, and landing gear, its way too flimsy. Would recommend you build a new fuse from scratch using solid balsa, maple mounts, and 1/8th 5 ply doublers, and a decent 2-1/4 wheel. Make sure the mounting holes for gear are going through maple as well, you can use the landing gear wire they supply but if you’re running 9" + props you may need to up-size this part too. As for power plants, I was running an Enya 30 and had too much power for the plane, would stick with the .25" Hope this helps, Regards, Mike.