Update
Small update. I decided I wanted to get rid of the wide Whizzer handlebars and tall stem. My opinion, they make the bike look dorky.
So, the quill Whizzer uses is 21.1mm (typically old american bike/BMX size). NOT the more typical 22.2mm size. It's a little confusing because the Whizzer quill actually has a machined step in it that reduces down to 21.1, and this step limits how far you can insert the quill. Anyway, I ended up buying a "Black Ops" 21.1mm quill that has a 4 bolt cap. It's chromed and stocky looking, so I think it fits the style I'm after.
Bad news, this quill uses a 7/8" handlebar (not typical 25.4/1"), so I had to look for cruiser handlebars that use this smaller clamp area size. I found a place called Cross Lake Sales that had a set of handlebars for $7 or so (sold out now)...
Here's the result. It lowers the bars, and they're MUCH narrower (which is good because I can now walk the bike thru a doorway- not possible with the wide Whizzer bars).
Also, I added a layback seatpost from forum member inked1974 (Chad). Awesome American made quality at an excellent price!
Finally, I pulled the turn signals off. They are kinda poor quality, and I noticed that the left rear was cracked and had been repaired by the previous owner. I'm thinking I will try to build my own set of turn signal lights that are lower profile. If anyone has any ideas, I'm all ears.
Now my next question- how do I shorten these Whizzer cables??? It seems like they're all custom terminated; not like regular bicycle cables at all. How do you guys do it?