I can't tell about quality, bu they look nice: http://www.mach1performance.org/mustangii.htm The Home page says that the owner is David Wagner. I believe that he has a Ghia in the Car of the Month section of the MII.net website.
Id just like some new coupe ones from here, but I have yet to receive any response when I've tried to order new ones. Every other shirt available but ours! I wouldn't even mind so much if i got the standard "not enough interest" excuse, but I've never even got a response!
I saw this thread last week and ordered the polo and the t-shirt. Payed with Pay-Pal and they showed up a couple days ago. Very pleased with the quality of the Polo. The t-shirt is a Hanes and seems a little thin on the thread count. I am 6ft pushing 200lbs and the large size fits pretty good. not too tight, but havn't washed yet.