Phalanxairsoft

Ok so I'm new at all this so take it easy on me.... ok I just bought a 1973I 240z standard and I got a 350 small block engine and need to know exactly what I'm going to need(other then a good mechanic) to install it a friend if mine said ill need engine mounts or something and a wiring harness where exactly can I find these things thanks again for the any help provided....