As 49autocycledeluxe stated the OCC chopper has already been trade, sold or whatever. In regard to the Streamliner. That bike is so unique and different, its like a dead weight to the theft..it could be left abandoned somewhere.
This is my opinion only , do what you want with it. This might not work at all.
Make about 100 flyers , post them everywhere from the nice areas of town to the worst. obviously with a picture of the bike, and something like the following. STOLEN / (WHATEVER AMOUNT YOU ARE WILLING TO PAY) CASH REWARD FOR ITS RETURN / NO QUESTIONS ASKED / CONTACT INFO. The phrases Cash reward and No Questions asked will definitely spark a lot of interest, from the junkies to nice people. ( When I say nice, Im not saying junkies cant be nice people, I am referring to nice people as Leave it to Beaver type nice)
If all goes well, you will get contacted. You and a friend( back- up, maybe in view or not ) meet the person(s) in a public place. This is where you decide what type of person(s) you are dealing with ( shady or not). If shady have your friend try to take a picture of the suspect(s) without being noticed. {This is for future reference in case they are seen around }.
Remember, no questions. Once the transaction has taken place, you go your way he /she / they goes theirs.
In case of shady person(s), another group of your friends follow that suspect(s) to see what hole they came from or possibly be taken directly to their dealer.
If he / she wants to play leave the ransom game..leave the money at X and the bike will be there. That's find too. same plan a little different strategy.
I know there is a lot of thoughts among the CABE, what the friends following the suspect(s) should do.... Your friends are sensible grown adults they'll figure it out what the right thing to do is. Just to add...junkies very rarely go and file a report to the police