nishiki frame..
 

im looking into picking up a '76 Nishiki international frame for what i think to be a decent price(dont really know what it's actually worth)..my basic intentions are to build it into a fixed or ss..the issue at hand is that i stand at a mean 5'6" maybe 145lbs and the frame is a 51.5cm and i fear that it might be small..what do you guys think?

Well, depending on the Top Tube, it sounds like it probably is about the right size. I am 5'7" and ride a 52.5-53cm TT, which in many cases ends up being a 49-52cm ST.

There's a Nishiki on eBay that's in your size right now. As for it's worth, check out the Classic and Vintage forum. The trouble with eBay is that people bidding on stuff don't seem to consider the cost of shipping when they buy something.

I got mine for free on trash day just look at yard sales you can find em cheaps