THK

Sorry I have not responded sooner, I contacted several of the vendors on Amazon, and the reply has been that their mud flaps don't fit.  Guess I will make a pest of myself with Weather Tech.

Thank you all, will be making a couple of calls

While Ford has not produced a mud flap accessory and Weather Tech does not make mud flaps for the ST, how is the fitment/quality on some of the E-bay units that are offered?  Price range is all over the place. Any help from the ST community on what you're using.  

I keep sent in a request to Weather Tech every month inquiring about the mud flaps.  They offer flaps for the Edge but they don't fit the ST.  Maybe they need to hear from the ST community.  Might let the know that if you produce it we will buy it.

Any suggestions to the first part would be appreciated.

I got one of these adaptors for my 22 Edge ST.  Installation took 20 minutes.  The only word of caution is be careful on how you remove the covers, otherwise this adapter is worth the money.