1978 K5 Tranny and transfer case swap

[Jadin666]

I am swaping the th350 tranny and NP203 Transfer case for and SM465 and NP205. and I am trying to figure out if I should change the yoke on my GM 12bolt rear end to a 1330 or a 1350 yoke? aside from price and measurements what is the benefit or down fall to each? and does anyone know where I can get a rear and front drive shaft for the NP205 Transfer case for a k5?