What engine? What heads?
Who's fitting the cam? Do you have a degree wheel, pointer and magnetic base depth guage (can't remember correct name :2)
is there flexi hose from the pipes to the rad/cooler? Run 1 hose from pipe to tipe, the other hose from cooler/rad inlet to outlet. if it is pipe all the way, find some heater hose that slides tightly over the threads, and join them that way.
Otherwise, just tie them up as high as you can, and put a drain tin under, and remember to top up the auto before you finish.
Are you running an iron manifold? Have you got a mate to help lift the iron manifold, and heads, on and off? Espaciall putting the new stuff on, as you don't want the gaskets moving around, and even alloys get heavy when your reaching across an engine bay....