someone please tell me where i can hook this back up and what its need to be fed through?

That looks like the sending unit for an elec. temp gauge. If you had an elec temp gauge in the car the wires should be there, other wise you will need to run wires through the fire wall and just hook it up.

its a water sending unit, if you are fuel injected hook it up, if not they sell a plug to cap it off.

ur obviously not fuel injected, seeing that fat edelbrock, but like njo2 said, u can get little plugs to block it off, i did the same.