Have you asked these questions of Honda? They are the ones that can truly
answer the question.

Any part replaced during the new car 3year/36000 mile warranty is covered
till the end of that time. Normally there is no extension if a part is
replaced. Example: If the trans was replaced in the 35th month after
purchase of the car, technically you would have one month of warranty on
that transmission. The exception occurs when the manufacturer puts an
extension on a stated component or vehicle.
Below is a cut and pasted portion of Honda's Service Bulletin regarding the
warranty extension on transmissions of affected vehicles. As you can see it
does not cover 99 models. BUT, if you have a problem in the near future (you
can't expect them to cover it forever) and if your friend did all the
maintenance at the dealer, ask the dealer to review and confirm that he did
everything the factory has suggested to maintain the vehicle. You may get
assistance that is considered "goodwill" and has nothing to do with the
extension to other year models. If he had all the maintenance done elsewhere
get all his receipts (if he has them) and be prepared to produce all of
those receipts that document he followed the recommended schedule. They may
help you with an offer that may cover the whole transmission and labor, or
they may offer a 50/50 split with you of parts and labor or you may pay just
for parts. You may get nothing but it doesn't hurt to ask and push a little.
Honda and the dealer looks kindly on their dedicated customers. The owners
that shun them usually get no assistance when these situations occur. And
rightfully so. Good luck,
Howard

May 28, 2004
Applies To: 1999-01 Odyssey - ALL
2000-01 Accord - ALL
2000-01 Prelude - ALL
Warranty Extension: Accord, Odyssey, and Prelude Automatic Transmission
(Supersedes 02-062, dated September 2, 2003)
BACKGROUND
In certain vehicles, a higher than normal number of
automatic transmissions may have defects in material
or workmanship that could cause premature wear or
failure. To ensure that customers have adequate
warranty coverage, American Honda is increasing the
warranty on the transmission and the torque converter
to 7 years or 100,000 miles, whichever occurs first.

Ensure that the new transmission was new, probably was since Honda replaced
it under warranty.  Honda claims that the new transmissions they put in are
"improved" though you will hear people going through a couple of improved
ones.  Since you know your friends driving style that should give you a
high-level impression of the car plus I assume that you've been a passenger
in the car.  If all is well there, you should have a pretty good vehicle.
Just be aware that they are prone for transmission troubles.

TIP:  Put in the extra effort when changing the tranny fluid, replace with
ONLY Honda fluid.  It is worth the extra couple of $$$.  The non-Honda
brands will gum up the transmission.  I learned this the hard way (poor
performance)...'nuff said.

In my case, Honda put in a new Honda transmission for me ('99 V6 EXL) at 68k
miles.  I am now at 91k miles and still shifting perfect.  Though I have to
admit, once I start to see some of the old problems resurface, my beloved
Accord will be trade bait or sold.

- Keith
Tallahassee, FL