im having a hard time finding a used engine for my 99 forester. they say its a one year model only? is this true? why can a 2.5 sohc from 2000, or 2001 work, what problems will i encounter if i get one of them? they are cheaper and more easily available? i have no problems changing the engine my self, i just dont want to purchase something that will be no good to me. i know in the last one i did, was a 97 lsi, with a dohc, and it was no probem to find the motor. just had to way a few weeks. any help would be great! thanks.