I have a 28 hole rear hub that I have leftover after a PT install last summer. I have since sold my Zipp clinchers with PT to buy a quarc cinqo. However, I want to replace the Zipps. I found a cheap new zipp wheel that is 28 spoke count but it is a front wheel. I can't imagine there is a difference a front and rear rim but before I buy and have it built up with my current rear hub I wanted to make sure. thanks in advance