Justanswer clone

Hi, I am looking for a clone Q&A site of [login to view URL] I wish to have exactly the same functionality as this site works exceptionally well. All payment plug ins, private messenger facilities etc. To see the site just enter a Q (just dont leave a deposit) this will allow you to access the members area to see how the site works and flows. Only serious offers taken and I will require proof of similar projects that you have undertaken successfully in the past thankyou