rebulding motor need help

[jdog300zx]

i recently got my z running after 3 long years of putting my motor in. i have a few coolant leaks in the back of the motor i pulled my upper intake plenum but i need to know what size hose is good to run on the coolant lines because the ones that were on the motor look too big. i also was wondering if there is a diagram of the coolant flow i havent been able to find one it would help greatly so i dont mess up putting the coolant lines back together. any help or advice would be greatly appreciated thanks.

[t.mcginley.jr]

First, is this NA or TT?

I'm pretty sure 1/4" hose works for the smaller lines and 1/2" for the bigger heater core lines. I tried making my own too, but the preformed factory ones are much better and I think its only like $20 for both from Z1.

Does your car have the throttle body coolant bypass done or no?

[jdog300zx]

No bypass done and its an na if anyone has a coolant flow diagraim it would greatly help