buying a broken quad need help

hi i am buying a 1986 honda 250 fourtrax for real cheap i mean under $500 the owner said it starts up but he said that there is a change of direction of bevel gears and drive line he said he has a spare motor that comes with it that has the bevel gears so i could replace the broken bevel gears
would this be a really big project as i am a teen who never has opened up a engine before and how much would this cost me

buying a broken quad need help

hi i am buying a 1986 honda 250 fourtrax for real cheap i mean under $500 the owner said it starts up but he said that there is a change of direction of bevel gears and drive line he said he has a spare motor that comes with it that has the bevel gears so i could replace the broken bevel gears
would this be a really big project as i am a teen who never has opened up a engine before and how much would this cost me