i looked around a bit, but i never found a old type pan seat cover with the word Ferguson printed on it.
I guess your best bet maybe to buy the type seat cover you want, then take it to a Upholstery shop with a copy of the word (Ferguson) and have them cut the letters on one one of their fancy machines. Then attach the word to your seat cover.
This will work as long as expence is not a problem.
check out the word i found on the computer, it would look good on the seat cover.
also look good on a hood cover.