OH DRAT!!!!!!
I guess it's close enough to the "holy grail".
I believe you may be able to get the original pipes from Honda - They still have some parts - Expensive is the word.
Or you could try Dennis Kirk, bike bandit, or google it for more choices.
Most after market pipes are 4 into 1
Z1enterprises.com has a 4 into 1 set listed for $375.
Good luck