Originally Posted by relyt

I think those are typos. I'm pretty sure they are only made with 36 holes. Mine has 36 holes for sure.

To the OP, compared to the price of a hub and spokes a rim is not a very significant expense. Buy a 36 hole rim. I like the Sun CR18 for a cheap and durable 700C rim. I laced my S3X hub to a Mavic Open Sport and that is a nice rim as well.

For about $20 more you could have an entire singlespeed wheel and an internal-gear hub wheel. If you try to reuse the rim you have, you will end up with one wheel and an orphaned singlespeed hub. It doesn't make sense to lose that utility for a mere $20.