Preface: My beloved Lola; my first build - a cheap Walmart frame with a 49cc China Doll - was stolen last week. I only had her since 04/2014.
I have since replaced her with a custom frame build that my friend's roommate has had in storage for far too long.
I will miss Lola terribly; but this new bike is just 100X better. I was already a dedicated gasbike enthusiast, but now that I see what is possible, I'm totally hooked.
SO: take a look at the pic, and let me know what I might eventually be able to upgrade to, as far as maximum tankage goes. The only limitation (and this is not a deal-breaker) is that I would like to put a standard rack on the back at some point; which may or may not keep me from using a rear-mounted tank. Open to any ideas.