Hey - same thing happened to me!
I wanted a '85 to '87 Big Red, got in too much of a hurry, and now I have three '85's in my garage!
And I still have my 1984 Big Red!
I'm not sure I need four Big Reds, may sell a few....
...but then I paid waaaay too much for one of them, am replacing
parts to make it worth what I'd ask for it, but
parts are expensive....
I did replace the headlight bulb in one of my Big Red's with a 9003 "Sylvania Silverstar Ultra" bulb, fit right in place of old bulb.
BIG difference in light output!
Was available at Oreilly's Auto and Advance Auto
Parts.