Was there a hood front molding that matches with the grill opening molding on a 78 Spider?

No. That started in 79

Here is how my 78 arrived. When I look at what IAP offers for the 78, I don't see any hood trim.
http://www.international-auto.com/index ... p&pid=2647

I removed the small bump hood and used one off a 1980. That hood does have the trim.