KWrocketry
From Kerbal Space Program Wiki
KW Rocketry
KW Rocketry is a mod that adds many engines, fuel tanks and fairings into Kerbal Space Program. In my opinion, this mod is best paired with MechJeb2 and Near Future mods, along with Umbra Space Industries modpack. I am very experienced with this mod and do not know what I did without it. I cannot tell you much more. If you want more than look on Youtube or the KSP forum.