Project car 1973 240z

I just got a 1973 Datsun 240z that is going to be a project car my parents bought for $350 for a Graduation present. I know how to do all the starting body work (all it is is rust and replacing a few things) but the engine has not been ran since 1998 and he said something about a heating coil going out and I am wondering where the best place to start is, and if y'all know of any good places to get parts? all help will be greatly apriciated.