definitely buy a whole bike for conversion, you get a pretty good bike in need of work, single speed much cheaper than fixed as you can use a normal hub, 70's or 80's road bike with screw on rear hub cassette. You could do with a friend with tools, you're welcome to use some of mine but I'm in birmingham. Having said all that, buying one built up on here if you're quick is the easiest option.
definitely buy a whole bike for conversion, you get a pretty good bike in need of work, single speed much cheaper than fixed as you can use a normal hub, 70's or 80's road bike with screw on rear hub cassette. You could do with a friend with tools, you're welcome to use some of mine but I'm in birmingham. Having said all that, buying one built up on here if you're quick is the easiest option.