(1) Hundreds of people line up at Grand Central Terminal yesterday, but they weren't there to catch a train. (2) They came to trade in old dollar bills for the new George Washington Presidential $1 coin to New York City's famous railroad station.
(3) By the U.S. Mint the gold-colored coin is the first in a new series. (4) The Mint will issue four Presidential $1 coins a year through 2016. (5) Presidential $1 coins will come out in the order in which each President served the George Washington coin is the first to be released. (6) The new coins is similar to the popular 50 State Quarters program. (7) That program issued coins in the order in which each state joins the Union. (8) John Adams, Thomas Jefferson, and James Madison coins will come out later this year.

What is the best way to rewrite sentence 6?

The new coins are similar to the popular 50 State Quarters program.
The new coins is similar too the popular 50 State Quarters program.
The new coins is similar to the popular 50 state quarters program.
Leave as is.