'
Did you see the early 80's listings for Arnie Olivas w/ a '77 Vega "Dream Weaver" on Draglist pages 73&74.
If the same car, obviously the '77 update styling is what's being referred to also this indicates model years noted on Draglist aren't necessarily the actual year of the vehicle so you may be missing earlier entries if searching only '73 cars?
Keep digging and good luck!
~ Pete
Draglist Page #73...
http://www.draglist.com/draglist/cat...TRUEET&page=73
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