Clicked on this thread because I also own a Super Course, 1984 model. I purchased it in near-new condition. Slowly, I removed its original components, put them in a special box, and replaced them with modern, more-functional components.

The only thing I DIDN'T change was the handlebars. :--) I like the old 38mm spread on these OEM drop bars. For me, it feels right, and the drop bars offer a number of different hand positions you cannot get with flat bars.

However, I DID replace the following:

1. Wheels. The OEM front Araya had a dish in its seam. Changing that wheel was a no-brainer, a necessity.
2. Sprocket assembly. The OEM 12x23 was not my friend on these long local steep hills. A 14x28 gave me the large cog I needed.
3. Rear Derailleur. The old derailleur didn't work well with the new, wider-spread sprocket assembly. So I installed a new, longer RD. Problem solved.
4. Front Derailleur. Because it was cheap and it works like buttah.
5. Brake hoods. Those little holes in the OEM Dia-Compes look cool. But it's still metal against your hands. The new Cane Creek brake hoods are lovely, soft rubber that invite and encourage your hands to rest there, whether sitting or standing.
6. Brakes. Another no-brainer. Modern, brushed aluminum Ultegras provide superior braking with easily replaceable shoes.

Which one is the most significant in terms of changing the bike's personality? Probably items 1 through 6.

I love this bike now. But it took awhile. . .

Duane Behrens