Re: Cruiser SeatPost (45º or 60º back)
Several long-time members are likely to chime in any minute with a few sites to suggest right off the top of their heads. But I did mine on the cheap. I found a thread here that described how to use old handlebars (steel ones, that is) and cut them in the right place to make seat posts. They're the same diameter. BMX ones tend to have tighter angles. Old cruiser bars tend to have more obtuse angles. Get out a hacksaw or angle grinder and there you are.
"There is nothing wrong with wanting a motorbike that is an extension of your personal taste and fashion sense; if you must ride somewhere, I say do it with style