Well the Radiator hoses depend on the radiator you are using. You then go down to the auto stores and start searching. I use a camira top hose and a sigma bottom hose. But that suits my custom radiator. If you use a s13 radiator the hoses would be different.

Same for the heater hoses. I went to the auto store and got some hoses the right shape. And used a joiner / reducer in the middle to reduce the pipe size from the CA to the 1200 heater box.

I assume by vacuum system you mean the 3 lines comming off near the throttle body going to the idle control solenoid and vacuum canister. If your using the standard ecu and want to retain the idle control buterflies in the intake manifold. You will need these.

Plenty of reading and pix in previous posts.

Enjoy !