Need help identifying parts
 

I took my 2000 Ex to a shop to look at a leak I have, they said it was leaking from behind the timing belt. He said the timing belt, water pump, cam seal, crank seal and oil pump seal would have to be replaced basically the entire area. My brother said we could do it ourselves if I bought the parts, how can I know what the correct parts are that I would need, should I be looking for them by another name?