Well I found the serial# and it begins with J82, so I'm guessing its an 82 model with 105 shimano components ...hopefully its decent enough to hold my weight haha

The thing that confuses me alittle is that its a burgundy color which only the 310 and 610 models came in, the 210s came in red.. The guy at the bike shop also found this interesting

*Update*- So I took in the bike I got yesterday for $40 and the guy said even though the serial # is J82, The color and characteristics point to it being a 1983 210 .. I read up online and someone stated that a serial # for a Miyata beginning with a J=1981-82..Who is right??? haha