Make sure they can read your name and address and include a phone Number just in case. I bought my Snake on Oct. 13th and they said that since it was bought so late in the model year, I didn't make the list for the certificate mailing, so gotta contact SVT for it personally. I faxed my stuff on about Dec. 8 or so and got it on Dec. 29th. Good luck :')
I had to call 1-800-FORD-SVT to get mine. The dealership did not do the appropriate paperwork. I got it yesterday, one problem though: the center part is printed at an angle. I'm going to call and ask for another.
I bought mine on Oct 14th and called up just the other day to see where my certificate is and the guy took my info and send they would send it out. I didn't really have to prove ownership so I am guessing I was in their system(?) ..after all ford hasn't missed a beat with sending me my payment statements and their junk mail trying to sell me insurance
One of my friends just got his welcome kit and he received his certificate several months ago. We will get one eventually, I hope. My 00 GT was built 7-26-00.