2 questions: What bike is this? Also is this front wheel too big? I found this bike one morning near my house and figured I'd bring it home to work on it/restore it. But I have no idea what make/model/year it is and I come asking for help. I can make out the word "SINTESI" on the side but that's about it. I tried to take a picture of the brand marks that were still visible but mind you, none of these may be stock. Also I stuck a 700c wheel on it and I was wondering if it's too big? 

Cheers
Really hard to tell from the pictures. One thing I am certain of is that almost none of it is stock. A few observations:


The main frame is lugged, has full length brake cable housing and horizontal dropouts and starred bottle braze-ons. All of those date it to sometime prior to the late 80s. Split brake cable housing on road bikes became the norm on production bikes in the late 80s. Horizontal dropouts also largely disappeared from mass production bikes due to the introduction of indexed shifting in the mid to late 80s.  
The fork is a unicrown model. Unicrown forks on massed produced road bikes didn't really become the norm until the early 90s. This one has a threaded headset so it mostly likely predates the late 90s by which time threadless became the norm on mass production bikes in the interest of cost savings. 
Sintesi is an Italian company who came on the scene in the early 90s and are still around though no longer in the US market (AFAIK). That said, "Sintesi" is also Italian for "synthesis" so it could simply be a model name rather than actual brand (for example, Irio Tommasini offers a model called the "Sintesi" but this isn't one of his) 
The stem is likely from the 70s. CB was a common brand back then. The brake levers likely say Universal, Weinmann or CLB. The exposed brake cable date them to prior to the late 80s at which point "aero" levers had become the norm.