Check these out... second could be a consideration... like i said just had to share.

http://washingtondc.craigslist.com/mcy/93222060.html
http://washingtondc.craigslist.com/mcy/93289453.html

You should buy both.  Then you can turn the seca into a stunt/track bike.  

Oh, WTF he rode it to the BAR?  That's great let's get tanked and ride our crappy bike with no rear brake home.  Good Idea Jackass!

That's probably how it got into that condition in the first place.

The cops probably don't pull him over because they're taking bets on when it will fall into a billion pieces a la the Bluesmobile and dump his ass on the road.

I love this line. " honestly, this should cost no more than $200 or so to get fixed, Im guessing" It shouldn't cost more than 200, but of course he's just pulling numbers out of his ass.

wouldnt touch the seca II unless you gonna get parts shipped to you from the UK.    more parts around for the olders seca's/maxim's then the newer ones. over in the UK they are called the Diversion which came in 600 and 900 that i know of.

as to the SV might be a good option for a clear titled frame swap.