This is my first time posting here, but all of my research has shown me that the people on this forum are the best resourses there is.

Any way, I am working on my first ever single speed conversion. I bought an old Bianchi Sport SS (maroon frame) and just started ripping it apart, I got the drive train removed but ran into some problems with the rear wheel.

I need some help on choosing the best wheels for the job. I thought about using the original 10-speed wheel set but its really heavy and in really bad shape. I believe the spacing is 130mm, but could be 126mm and I don't know if I can use a 120mm that seems to be the standard track set or if I need to find something that fits exactly. I'm totally new at this so go easy on me, but I need help to get this thing ridable.