Not old or nearly as cool and probably not considered a "klunker", but it's what I've got. It's my "mountain cruiser/adult bmx" Trek Classic. Future plans include Panaracer Fire XC blackwall tires with the red bead(not the wide red sidewall) and white lettering. Needs a different seat and BMX-style bars. Possibly a suspension fork at some time. Still debating on whether the chainguard will stay or go. Everyone takes them off so I might just leave it on.
Here is my Klunker that I am working on. Frame is a straight bar JC Higgins. It has a Nexus 7 speed rear hub, SA front drum brake, motorcycle handlebars, and motorcycle brake levers. I am runnning some Specialized Enduro tires I had lying around. I plan to change the seat to a Brooks saddle and change the crank to a 3 piece crank. It is alot of fun to ride.