This plane can hold up to ca. 180 m/s and is designed to give the propeller enough power while you are on the dayside at least. It also has some mods used but no big deal, two of them are wery popular so almost every one has them.
The mods are,
B9 Aerospace pack: forum.kerbalspaceprogram.com/showthread.php/25241
Firespitter: http://kerbal.curseforge.com/parts/220252-firespitter
and the mod you probably don’t have…
TTT (modular multiwheels) wich currently hasn't been uploaded on curse but for now it is in the .zip file. I will remove It for copyright reasons because it is not mine.
Make sure to check out my other crafts too!