Here is another one I was shown last week. The prices look slightly better at quick glance but I know nothing about the company.I thought those clutches were obsolete, but I looked and everything is still available!
Honda ATV Parts 1987 TRX350 A DIFFERENTIAL GEAR Diagram
They were used up thru 2001 on various models. Even the cone shaped springs are for sale. The case, gears and shafts are the only parts that you can't buy. Servicing the clutch packs is not difficult either! And you got the secret juice already... LOL