This was given to my dad in the early 80s who subsequently gave it to my cousin who was about 14 at the time. He rode it for a little while, but for most of the last 25+ years this bike has been in the rafters of my aunt/uncle's garage. About a week ago I decided to go get it and try to salvage it. It's actually in much better shape than I expected, seeing that my cousin probably didn't care one bit about it.

Any info about it would be appreciated. I'm thinking it's a Quantum frame? It's got a DA 52/42 crank and FD and a 6-speed cassette (don't know brand). I'm thinking the Huret RD isn't original which is why I'm looking to upgrade it. Can anyone tell me if this RD will work (hopefully quickly since the auction is ending)?

http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_3923wt_911

Also I'm thinking these brakes should work?

http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_4642wt_911

So far all I've done is clean/lube drivetrain, new saddle (old one was far gone), new tires/tubes, and re-taped the bars

Here are some pics, they're from my iphone so the quality isn't super. Any info is helpful, thanks guys