Needs help badly

[71sliverbullet]

Ok i have just started on my project truck of my dreams. i have 71 chevy c10 4x4 with a 350 and what i call a four speed but i have problems and questions and will take any and all help i can get. i have switched the axles to 3/4 drive train and moved spring perches and all that jaz but i have to put and np205 transfer case behind the manuel but dont know which one i need or anything along those lines. and i also have to put longer brake lines on it since i have lifted it 6 inches but with the axles being newer than the truck i dont know which lines will work. any tips please let me know. thanks for everything