Building a Vehicle System using many separate parts

Hey guys, I'm looking for perhaps a tutorial on building a vehicle system or even a character system that i could use to get my head around the concept, Basically me and a friend are planning on building a space game and want to give the players the option of building there own ship/vehicle using a list of pre-made parts. I'm not sure where to start and i cant seem to find any tutorials to get this off the ground. Something like the wow character creator would even be a good place to start i could then modify the tutorial to be a ship rather than a character http://img2.wikia.nocookie.net/__cb.../b/ba/Character_creation_Cataclysm_goblin.jpg

If anyone knows of any tutorials or can give me some advice on where to start I'd greatly appreciate it, I'm not sure if I'm simply typing in the wrong keywords to find the tutorials I'm looking for.

p.s we are planning on using c#

Thanks.

 

havent playd WoW but something like this https://www.assetstore.unity3d.com/en/#!/content/8 - unity technologies, charater customization

 

https://www.assetstore.unity3d.com/en/#!/content/21320