I found a used engine for my 1989 honda accord. It has 25000 verified mileage comes with a 6 month warranty for $975. Is this a good deal? Price on a rebuild is about $1600 with 12 month warranty.

I have no idea but here is a site you can compare prices

Used Honda Engines - ASAP Motors (http://www.asapmotors.com/used-engines-honda-c-1_5.html)

You might want to check around for people parting out or selling as is cars and tell them you just want to make sure the motor is in good condition.