Thanks haha And for AccidentalDisassembly and M_Ouellette i really give you guy's comment quite lot of thoughts because what you guys describes makes more sense than then current K fuselages. So instead of a single k-cockpit how about i add one more j-cockpit with more j to k adaptors? because that would be pretty equivalent to another k cockpit but it gives more versatility. Also the current K fuselage will probably make more sense to look more like a scaled up J fuselage rather than the current which are basically flying bricks. I created some mock up models (it doesnt look too good yet just an idea of how the K fuselage could be, they are roughly J fuselages scaled up by 1.25) http://i.imgur.com/xvlJZpj.png Note that the picture is from an anime called to-aru-majutsu-no-index, i found it when i was searching space plane images on googles and it's what i modelled the J cockpit after and main source of inspiration for the wing designs. Even though it's a anime i thought the ship is really well designed and it looked visually very convincing of it's function with it's atmospheric engines on the side and a pair of rocket engine at the rear. Apparently that scene only lasted few seconds as i couldn't find more reference images, im amazed how much thought the animators given it as a aircraft design. Its probably my second Favorited space plane design after the Valkyrie TAV. The new k fuselage design looks more like a extension of J parts with flatter bottom, also gives a much more smoother look overall. You could argue it looks very similar to the Mk4 fuselage with its bulge at the top and lobes on the sides but i would say its some kind of spaceplane fuselage design convergence haha. This new design remains unable to carry 3.5m cargos but compare to the J fuselage, its able to give the 2.5m cargos a much bigger clearance with flatter floor more suitable for rovers. So i think is a nice extension of the j fuselage. I do not plan to give it a cargo ramp because i find cargoramp in ksp is rather awkward so ill go for a elevator part instead. Also to mention i plan to create these little rectangular cargo modules thats designed to fit inside J and K parts. Because the K parts is huge so i plan to create as few parts as possible, mostly just hollow fuselage with a decent amount of fuel stored on the sides. I know this is going to be a huge change to the k fuselage, but i think im going ahead to make this change, im always open to more comment though when it comes to new designs! what do u guys think? Wow I was just thinking along the lines of maybe stretching the K cockpit to twice it's current length to give it a smoother transition and sleeker shape, but that design is gorgeous. I do hope though that you will be keeping the old parts available in a legacy pack, I'm archiving all these parts either way because I loved that Valkyrie design and the K cargo hold does have some advantages even though it seems suited for a much larger aircraft.