Dude, find the soundtrack to movies based in/made in '70s.

http://www.stlyrics.com/d/dazedandconfused.htm get those songs, foghat's slow ride pwns.

Also get "Argent - Free Ride" it sounds like a classic '70s song.

The Who - Won't get fooled again, their greatest hits album is really good too if you wanna check that out.

Don McClean - American Pie

Like I said I'm sure you'll find tons of great songs if you look up the right soundtrack, thats where I always hear the best older songs.